Frame Synchronizer (polyphase filter bank)

This component recovers both symbol timing and carrier phase information using a polyphase filter bank for simultaneous matched filtering and decimation. It is an extension of the MultirateSynchronizer? component in that it adds an initial synchronization period to find the beginning of the frame...

Preamble phasing pattern P/N Sync code Control codes Data
10101010... Maximal-length sequence c0c1c2c3c4c5c6c7 Information symbols

The first three control bits determine the modulation scheme...

c0 c1 c2 Modulation scheme
0 0 0 BPSK
0 0 1 QPSK
0 1 0 8PSK
0 1 1 16-QAM
1 0 0 4-PAM
1 0 1 -
1 1 0 -
1 1 1 -

Control bits c3 and c4 determine the frame size...

c3 c4 Frame Size
0 0 2048
0 1 4096
1 0 8192
1 1 16384

Software Status

Currently, FrameSynchronizer is in experimental/development mode.