连续相位QPSK调制的简化接收机

Abstract

Abstract:

The complexity of the conventional optimum receiver for continuous phase QPSK (CPQPSK) increases exponentially with the length of the shaped frequency pulse. A simplified receiver based Laurent decomposition (LD) for CPQPSK is proposed. CPQPSK signals can also be decomposed according to the LD theory. The optimum receiver and the simplified one for full response CPQPSK signals are designed based on LD. The latter is achieved by choosing several key filters in the matched filter bank for the optimum receiver. Computer simulations are performed on these simplified receivers. Simulation results show that the bit error rate performance of the simplified receiver with three matched filters can approach that of the optimum receiver with eight filters under a higher signal-to-noise ratio.

Key words: phase modulation, pulse amplitude modulation(PAM), receivers, Laurent decomposition

CLC Number:

TN919

LIN Yong-zhao1,2;WU Cheng-ke1;WANG Bu-hong2;CHEN Na1. Simplified receiver for continuous phase QPSK modulation[J].J4, 2009, 36(3): 418-423.

References

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Simplified receiver for continuous phase QPSK modulation

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