| 1 | #ifndef __DEMODULATORDSPTEST_H__ |
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| 2 | #define __DEMODULATORDSPTEST_H__ |
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| 3 | |
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| 4 | #include <cxxtest/TestSuite.h> |
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| 5 | #include "src/DemodulatorDSP.h" |
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| 6 | // |
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| 7 | // A simple test suite: Just inherit CxxTest::TestSuite and write tests! |
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| 8 | // |
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| 9 | |
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| 10 | // NOTE: " : public CxxTest::TestSuite" must be on the same line as the class |
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| 11 | // definition, otherwise the python script does not recognize it |
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| 12 | // as a test class |
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| 13 | class Demodulator_TestMiscellaneousFunctions : public CxxTest::TestSuite, |
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| 14 | public DemodulatorDSP |
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| 15 | { |
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| 16 | public: |
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| 17 | void test_ScaleSignalAmplitude_01() { |
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| 18 | // Generate 4-PAM signal |
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| 19 | short I[4] = {-15, -5, 5, 15}; |
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| 20 | short Q[4] = {0, 0, 0, 0}; |
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| 21 | ScaleSignalAmplitude(I, Q, 4, 10000); |
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| 22 | |
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| 23 | TS_ASSERT_DELTA( I[0], -13416, 1 ); |
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| 24 | TS_ASSERT_DELTA( I[1], -4472, 1 ); |
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| 25 | TS_ASSERT_DELTA( I[2], 4472, 1 ); |
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| 26 | TS_ASSERT_DELTA( I[3], 13416, 1 ); |
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| 27 | |
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| 28 | TS_ASSERT_DELTA( Q[0], 0, 1 ); |
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| 29 | TS_ASSERT_DELTA( Q[1], 0, 1 ); |
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| 30 | TS_ASSERT_DELTA( Q[2], 0, 1 ); |
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| 31 | TS_ASSERT_DELTA( Q[3], 0, 1 ); |
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| 32 | } |
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| 33 | |
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| 34 | // Generate 16-QAM signal |
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| 35 | void test_ScaleSignalAmplitude_02() { |
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| 36 | short I[16] = { |
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| 37 | -15, -15, -15, -15, |
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| 38 | -5, -5, -5, -5, |
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| 39 | 5, 5, 5, 5, |
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| 40 | 15, 15, 15, 15}; |
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| 41 | short Q[16] = { |
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| 42 | -15, -5, 5, 15, |
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| 43 | -15, -5, 5, 15, |
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| 44 | -15, -5, 5, 15, |
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| 45 | -15, -5, 5, 15}; |
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| 46 | ScaleSignalAmplitude(I, Q, 16, 10000); |
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| 47 | |
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| 48 | TS_ASSERT_DELTA( I[0], -9487, 1 ); |
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| 49 | TS_ASSERT_DELTA( I[1], -9487, 1 ); |
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| 50 | TS_ASSERT_DELTA( I[2], -9487, 1 ); |
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| 51 | TS_ASSERT_DELTA( I[3], -9487, 1 ); |
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| 52 | TS_ASSERT_DELTA( I[4], -3162, 1 ); |
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| 53 | TS_ASSERT_DELTA( I[5], -3162, 1 ); |
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| 54 | TS_ASSERT_DELTA( I[6], -3162, 1 ); |
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| 55 | TS_ASSERT_DELTA( I[7], -3162, 1 ); |
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| 56 | TS_ASSERT_DELTA( I[8], 3162, 1 ); |
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| 57 | TS_ASSERT_DELTA( I[9], 3162, 1 ); |
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| 58 | TS_ASSERT_DELTA( I[10], 3162, 1 ); |
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| 59 | TS_ASSERT_DELTA( I[11], 3162, 1 ); |
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| 60 | TS_ASSERT_DELTA( I[12], 9487, 1 ); |
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| 61 | TS_ASSERT_DELTA( I[13], 9487, 1 ); |
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| 62 | TS_ASSERT_DELTA( I[14], 9487, 1 ); |
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| 63 | TS_ASSERT_DELTA( I[15], 9487, 1 ); |
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| 64 | |
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| 65 | TS_ASSERT_DELTA( Q[0], -9487, 1 ); |
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| 66 | TS_ASSERT_DELTA( Q[1], -3162, 1 ); |
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| 67 | TS_ASSERT_DELTA( Q[2], 3162, 1 ); |
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| 68 | TS_ASSERT_DELTA( Q[3], 9487, 1 ); |
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| 69 | TS_ASSERT_DELTA( Q[4], -9487, 1 ); |
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| 70 | TS_ASSERT_DELTA( Q[5], -3162, 1 ); |
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| 71 | TS_ASSERT_DELTA( Q[6], 3162, 1 ); |
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| 72 | TS_ASSERT_DELTA( Q[7], 9487, 1 ); |
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| 73 | TS_ASSERT_DELTA( Q[8], -9487, 1 ); |
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| 74 | TS_ASSERT_DELTA( Q[9], -3162, 1 ); |
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| 75 | TS_ASSERT_DELTA( Q[10], 3162, 1 ); |
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| 76 | TS_ASSERT_DELTA( Q[11], 9487, 1 ); |
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| 77 | TS_ASSERT_DELTA( Q[12], -9487, 1 ); |
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| 78 | TS_ASSERT_DELTA( Q[13], -3162, 1 ); |
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| 79 | TS_ASSERT_DELTA( Q[14], 3162, 1 ); |
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| 80 | TS_ASSERT_DELTA( Q[15], 9487, 1 ); |
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| 81 | |
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| 82 | } |
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| 83 | }; |
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| 84 | |
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| 85 | // NOTE: " : public CxxTest::TestSuite" must be on the same line as the class |
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| 86 | // definition, otherwise the python script does not recognize it |
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| 87 | // as a test class |
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| 88 | class Demodulator_TestDemodulation : public CxxTest::TestSuite, |
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| 89 | public DemodulatorDSP |
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| 90 | { |
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| 91 | public: |
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| 92 | |
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| 93 | void test_DemodulateBPSK() { |
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| 94 | short I[7] = {SHRT_MIN, -10000, -1, 0, 1, 10000, SHRT_MAX}; |
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| 95 | short Q[7] = {0, 0, 0, 0, 0, 0, 0}; |
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| 96 | char * bits_out = new char[7]; |
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| 97 | |
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| 98 | SetModulationScheme( MOD_BPSK ); |
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| 99 | DemodulateSequence(I, Q, 7, bits_out); |
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| 100 | |
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| 101 | TS_ASSERT_EQUALS( bits_out[0], BIT0 ); |
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| 102 | TS_ASSERT_EQUALS( bits_out[1], BIT0 ); |
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| 103 | TS_ASSERT_EQUALS( bits_out[2], BIT0 ); |
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| 104 | TS_ASSERT_EQUALS( bits_out[3], BIT0 ); |
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| 105 | TS_ASSERT_EQUALS( bits_out[4], BIT1 ); |
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| 106 | TS_ASSERT_EQUALS( bits_out[5], BIT1 ); |
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| 107 | TS_ASSERT_EQUALS( bits_out[6], BIT1 ); |
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| 108 | |
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| 109 | delete [] bits_out; |
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| 110 | } |
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| 111 | |
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| 112 | void test_DemodulateQPSK() { |
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| 113 | short I[4] = {-10, -10, 10, 10}; |
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| 114 | short Q[4] = {-10, 10, -10, 10}; |
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| 115 | char * bits_out = new char[8]; |
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| 116 | |
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| 117 | SetModulationScheme( MOD_QPSK ); |
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| 118 | DemodulateSequence(I, Q, 4, bits_out); |
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| 119 | |
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| 120 | TS_ASSERT_EQUALS( bits_out[0], BIT0 ); |
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| 121 | TS_ASSERT_EQUALS( bits_out[1], BIT0 ); |
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| 122 | TS_ASSERT_EQUALS( bits_out[2], BIT0 ); |
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| 123 | TS_ASSERT_EQUALS( bits_out[3], BIT1 ); |
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| 124 | TS_ASSERT_EQUALS( bits_out[4], BIT1 ); |
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| 125 | TS_ASSERT_EQUALS( bits_out[5], BIT0 ); |
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| 126 | TS_ASSERT_EQUALS( bits_out[6], BIT1 ); |
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| 127 | TS_ASSERT_EQUALS( bits_out[7], BIT1 ); |
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| 128 | |
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| 129 | delete [] bits_out; |
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| 130 | } |
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| 131 | |
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| 132 | void test_Demodulate8PSK() { |
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| 133 | short I[8] = { 100, 71, 0, -71, -100, -71, 0, 71}; |
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| 134 | short Q[8] = { 0, 71, 100, 71, 0, -71, -100, -71}; |
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| 135 | char * bits_out = new char[24]; |
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| 136 | |
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| 137 | SetModulationScheme( MOD_8PSK ); |
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| 138 | DemodulateSequence(I, Q, 8, bits_out); |
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| 139 | |
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| 140 | TS_ASSERT_EQUALS( bits_out[0], BIT0 ); |
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| 141 | TS_ASSERT_EQUALS( bits_out[1], BIT0 ); |
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| 142 | TS_ASSERT_EQUALS( bits_out[2], BIT0 ); |
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| 143 | |
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| 144 | TS_ASSERT_EQUALS( bits_out[3], BIT0 ); |
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| 145 | TS_ASSERT_EQUALS( bits_out[4], BIT0 ); |
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| 146 | TS_ASSERT_EQUALS( bits_out[5], BIT1 ); |
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| 147 | |
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| 148 | TS_ASSERT_EQUALS( bits_out[6], BIT1 ); |
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| 149 | TS_ASSERT_EQUALS( bits_out[7], BIT0 ); |
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| 150 | TS_ASSERT_EQUALS( bits_out[8], BIT1 ); |
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| 151 | |
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| 152 | TS_ASSERT_EQUALS( bits_out[9], BIT1 ); |
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| 153 | TS_ASSERT_EQUALS( bits_out[10], BIT0 ); |
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| 154 | TS_ASSERT_EQUALS( bits_out[11], BIT0 ); |
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| 155 | |
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| 156 | TS_ASSERT_EQUALS( bits_out[12], BIT1 ); |
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| 157 | TS_ASSERT_EQUALS( bits_out[13], BIT1 ); |
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| 158 | TS_ASSERT_EQUALS( bits_out[14], BIT0 ); |
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| 159 | |
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| 160 | TS_ASSERT_EQUALS( bits_out[15], BIT1 ); |
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| 161 | TS_ASSERT_EQUALS( bits_out[16], BIT1 ); |
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| 162 | TS_ASSERT_EQUALS( bits_out[17], BIT1 ); |
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| 163 | |
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| 164 | TS_ASSERT_EQUALS( bits_out[18], BIT0 ); |
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| 165 | TS_ASSERT_EQUALS( bits_out[19], BIT1 ); |
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| 166 | TS_ASSERT_EQUALS( bits_out[20], BIT1 ); |
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| 167 | |
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| 168 | TS_ASSERT_EQUALS( bits_out[21], BIT0 ); |
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| 169 | TS_ASSERT_EQUALS( bits_out[22], BIT1 ); |
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| 170 | TS_ASSERT_EQUALS( bits_out[23], BIT0 ); |
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| 171 | |
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| 172 | delete [] bits_out; |
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| 173 | } |
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| 174 | |
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| 175 | void xtest_Demodulate16QAM() { |
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| 176 | short I[16] = { |
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| 177 | -15, -15, -15, -15, |
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| 178 | -5, -5, -5, -5, |
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| 179 | 5, 5, 5, 5, |
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| 180 | 15, 15, 15, 15}; |
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| 181 | short Q[16] = { |
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| 182 | -15, -5, 5, 15, |
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| 183 | -15, -5, 5, 15, |
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| 184 | -15, -5, 5, 15, |
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| 185 | -15, -5, 5, 15}; |
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| 186 | char * bits_out = new char[64]; |
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| 187 | |
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| 188 | SetModulationScheme( MOD_8PSK ); |
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| 189 | DemodulateSequence(I, Q, 16, bits_out); |
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| 190 | |
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| 191 | TS_ASSERT_EQUALS( bits_out[0], BIT0 ); |
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| 192 | TS_ASSERT_EQUALS( bits_out[1], BIT0 ); |
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| 193 | TS_ASSERT_EQUALS( bits_out[2], BIT0 ); |
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| 194 | TS_ASSERT_EQUALS( bits_out[3], BIT0 ); |
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| 195 | |
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| 196 | TS_ASSERT_EQUALS( bits_out[4], BIT0 ); |
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| 197 | TS_ASSERT_EQUALS( bits_out[5], BIT1 ); |
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| 198 | TS_ASSERT_EQUALS( bits_out[6], BIT1 ); |
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| 199 | TS_ASSERT_EQUALS( bits_out[7], BIT0 ); |
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| 200 | |
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| 201 | TS_ASSERT_EQUALS( bits_out[8], BIT1 ); |
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| 202 | TS_ASSERT_EQUALS( bits_out[9], BIT1 ); |
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| 203 | TS_ASSERT_EQUALS( bits_out[10], BIT0 ); |
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| 204 | TS_ASSERT_EQUALS( bits_out[11], BIT0 ); |
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| 205 | |
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| 206 | TS_ASSERT_EQUALS( bits_out[12], BIT1 ); |
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| 207 | TS_ASSERT_EQUALS( bits_out[13], BIT1 ); |
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| 208 | TS_ASSERT_EQUALS( bits_out[14], BIT0 ); |
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| 209 | TS_ASSERT_EQUALS( bits_out[15], BIT1 ); |
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| 210 | |
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| 211 | TS_ASSERT_EQUALS( bits_out[16], BIT1 ); |
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| 212 | TS_ASSERT_EQUALS( bits_out[17], BIT1 ); |
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| 213 | TS_ASSERT_EQUALS( bits_out[18], BIT0 ); |
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| 214 | TS_ASSERT_EQUALS( bits_out[19], BIT1 ); |
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| 215 | |
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| 216 | TS_ASSERT_EQUALS( bits_out[20], BIT1 ); |
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| 217 | TS_ASSERT_EQUALS( bits_out[21], BIT0 ); |
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| 218 | TS_ASSERT_EQUALS( bits_out[22], BIT1 ); |
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| 219 | TS_ASSERT_EQUALS( bits_out[23], BIT0 ); |
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| 220 | |
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| 221 | TS_ASSERT_EQUALS( bits_out[24], BIT0 ); |
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| 222 | TS_ASSERT_EQUALS( bits_out[25], BIT0 ); |
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| 223 | TS_ASSERT_EQUALS( bits_out[26], BIT0 ); |
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| 224 | TS_ASSERT_EQUALS( bits_out[27], BIT0 ); |
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| 225 | |
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| 226 | TS_ASSERT_EQUALS( bits_out[28], BIT0 ); |
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| 227 | TS_ASSERT_EQUALS( bits_out[29], BIT0 ); |
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| 228 | TS_ASSERT_EQUALS( bits_out[30], BIT0 ); |
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| 229 | TS_ASSERT_EQUALS( bits_out[31], BIT0 ); |
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| 230 | |
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| 231 | TS_ASSERT_EQUALS( bits_out[32], BIT0 ); |
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| 232 | TS_ASSERT_EQUALS( bits_out[33], BIT0 ); |
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| 233 | TS_ASSERT_EQUALS( bits_out[34], BIT0 ); |
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| 234 | TS_ASSERT_EQUALS( bits_out[35], BIT0 ); |
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| 235 | |
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| 236 | TS_ASSERT_EQUALS( bits_out[36], BIT0 ); |
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| 237 | TS_ASSERT_EQUALS( bits_out[37], BIT1 ); |
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| 238 | TS_ASSERT_EQUALS( bits_out[38], BIT1 ); |
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| 239 | TS_ASSERT_EQUALS( bits_out[39], BIT0 ); |
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| 240 | |
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| 241 | TS_ASSERT_EQUALS( bits_out[40], BIT1 ); |
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| 242 | TS_ASSERT_EQUALS( bits_out[41], BIT1 ); |
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| 243 | TS_ASSERT_EQUALS( bits_out[42], BIT0 ); |
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| 244 | TS_ASSERT_EQUALS( bits_out[43], BIT0 ); |
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| 245 | |
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| 246 | TS_ASSERT_EQUALS( bits_out[44], BIT1 ); |
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| 247 | TS_ASSERT_EQUALS( bits_out[45], BIT1 ); |
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| 248 | TS_ASSERT_EQUALS( bits_out[46], BIT0 ); |
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| 249 | TS_ASSERT_EQUALS( bits_out[47], BIT1 ); |
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| 250 | |
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| 251 | TS_ASSERT_EQUALS( bits_out[48], BIT1 ); |
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| 252 | TS_ASSERT_EQUALS( bits_out[49], BIT1 ); |
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| 253 | TS_ASSERT_EQUALS( bits_out[50], BIT0 ); |
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| 254 | TS_ASSERT_EQUALS( bits_out[51], BIT1 ); |
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| 255 | |
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| 256 | TS_ASSERT_EQUALS( bits_out[52], BIT1 ); |
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| 257 | TS_ASSERT_EQUALS( bits_out[53], BIT0 ); |
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| 258 | TS_ASSERT_EQUALS( bits_out[54], BIT1 ); |
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| 259 | TS_ASSERT_EQUALS( bits_out[55], BIT0 ); |
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| 260 | |
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| 261 | TS_ASSERT_EQUALS( bits_out[56], BIT0 ); |
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| 262 | TS_ASSERT_EQUALS( bits_out[57], BIT0 ); |
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| 263 | TS_ASSERT_EQUALS( bits_out[58], BIT0 ); |
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| 264 | TS_ASSERT_EQUALS( bits_out[59], BIT0 ); |
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| 265 | |
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| 266 | TS_ASSERT_EQUALS( bits_out[60], BIT0 ); |
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| 267 | TS_ASSERT_EQUALS( bits_out[61], BIT0 ); |
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| 268 | TS_ASSERT_EQUALS( bits_out[62], BIT0 ); |
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| 269 | TS_ASSERT_EQUALS( bits_out[63], BIT0 ); |
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| 270 | |
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| 271 | delete [] bits_out; |
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| 272 | } |
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| 273 | |
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| 274 | void test_Demodulate4PAM() { |
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| 275 | short I[4] = {-15, -10, 10, 15}; |
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| 276 | short Q[4] = {0, 0, 0, 0}; |
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| 277 | char * bits_out = new char[8]; |
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| 278 | |
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| 279 | SetModulationScheme( MOD_4PAM ); |
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| 280 | DemodulateSequence(I, Q, 4, bits_out); |
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| 281 | |
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| 282 | TS_ASSERT_EQUALS( bits_out[0], BIT1 ); |
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| 283 | TS_ASSERT_EQUALS( bits_out[1], BIT0 ); |
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| 284 | |
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| 285 | TS_ASSERT_EQUALS( bits_out[2], BIT1 ); |
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| 286 | TS_ASSERT_EQUALS( bits_out[3], BIT1 ); |
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| 287 | |
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| 288 | TS_ASSERT_EQUALS( bits_out[4], BIT0 ); |
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| 289 | TS_ASSERT_EQUALS( bits_out[5], BIT1 ); |
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| 290 | |
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| 291 | TS_ASSERT_EQUALS( bits_out[6], BIT0 ); |
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| 292 | TS_ASSERT_EQUALS( bits_out[7], BIT0 ); |
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| 293 | |
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| 294 | delete [] bits_out; |
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| 295 | } |
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| 296 | |
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| 297 | }; |
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| 298 | |
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| 299 | #endif |
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| 300 | |
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