A programmable pipelined digital differential matched filter for DSSS receiver

A programmable pipelined digital differential matched filter (PDMF) impleme nted for a direct sequence spread spectrum receiver is proposed in this pap er. To reduce the power consumption, the architecture PDMF is based on the synchronization combined PN code phase acquisition algorithm (Huang et al., 1999). Compared with the conventional PN code phase acquisition algorithm, the theoretical analysis result indicates that the PDMF acquires both powe r efficient and preferable detection. Depending on different applications, programmability allows the PDMF to implement 3-tap, 5-tap, or 11-tap Barker codes with the same hardware but different precisions for each tap coeffic ient. For short tap Baker codes, the architecture could adopt more precisio n on each tap coefficient to resist the channel noise. Simulation results a lso show that there are fewer errors of high sample precision with the same tape.