UNB transfer system based on EBPSK modulation

摘要

UNB, as a new communication technology, attracts more and more attention with its high performance. As a research on UNB modulation, the article presents a different UNB modulation format, EBPSK modulation. The modulation progress is first introduced, its characteristics are analyzed, then, zero group delay filter is given in the equalization circuit form, its transfer function is analyzed through zero-pole and experiments about the filter's magnitude frequency and its response to EBPSK modulated signals are given, although the bandwidth of the filter is narrower, modulation information still exists after EBPSK modulated signal is filtered by the filter. On the basis of study above, a transfer system of EBPSK is discussed, and simulation is done, bit error rate is given, the narrower filter resisting to noise is not as good as the wider bandwidth filter, but high bandwidth efficiency can be achieved.