公开(公告)号：EP0614582A4

公开(公告)日：1994-11-09

申请号：EP92925347

申请日：1992-11-27

申请人： COMMUNICATIONS SATELLITE CORP

发明人： RHODES SMITH A

IPC分类号： H03D1/00 ,  H04L7/02 ,  H04L7/04 ,  H04L7/10 ,  H04L27/00 ,  H04L27/233

CPC分类号： H04L27/2332 ,  H03D1/00 ,  H04L7/0029 ,  H04L7/0334 ,  H04L7/04 ,  H04L7/10 ,  H04L2027/0048 ,  H04L2027/0085

摘要： Digital demodulator processing (Fig. 5) is accomplished for the reception of burst transmission (401) without preamble overhead (Fig. 3b) for synchronization acquisition. It is assumed that the modulation technique is either binary phase-shift keying (BPSK) (250) or quarternary phase-shift keying (QPSK) (250). The required synchronization (506), filtering (504, 505) and detection (512) functions for the demodulator are performed sequentially by repeated digital processing of stored complex baseband samples (501) of the received transmission burst (401).