HARDWARE SIMULATION OF KU-BAND SPACECRAFT RECEIVER AND BIT SYNCHRONIZER VOLUME Ⅰ

摘要

Symbol error rate performance will be degraded from theoretical by „ 94 dB at the system design point C/NO of 51.3 dB-Hz. A 4 pole Chebyshev filter accounts for . 33 dB of this loss with another . 3 dB attributed to both loops and the remaining „31 dB associated with the 2nd IF filter. Loss due to an IF filter is included because it is felt that one will be required from an actual hardware imple¬mentation point of view.nThe composite receiver acquisition performance study is not completed at this time. Information at hand indicates that the system will have no trouble acquiring sync at our design point C/NO of 51.3 dB-Hz with average acquisition times being slightly better than that predicted analytically. At lower C/No values the time-shared delay locked loop limits performance, but even so, acquisition times under worst case doppler conditions will be better than expected.