Research Article
Phase Estimation Algorithm for SFH/PSK Signals Using Few Reference Symbols
@INPROCEEDINGS{10.1109/CHINACOM.2007.4469449, author={Ye GanHua and Lu RuiMin}, title={Phase Estimation Algorithm for SFH/PSK Signals Using Few Reference Symbols}, proceedings={2nd International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2008}, month={3}, keywords={SFH; phase estimation; non-coherent detection;}, doi={10.1109/CHINACOM.2007.4469449} }- Ye GanHua
Lu RuiMin
Year: 2008
Phase Estimation Algorithm for SFH/PSK Signals Using Few Reference Symbols
CHINACOM
IEEE
DOI: 10.1109/CHINACOM.2007.4469449
Abstract
In military satellite communication systems that use frequency hopped waveforms, many systems use differential phase modulations. However, the use of DPSK over PSK results in reduced performance. To estimate the phase of each hop by using both few reference symbols and information symbols in a hop, BPSK and DPSK modulated signals can achieve higher performance. This paper focuses on QPSK and DQPSK waveforms where phase estimator is applied. The performance of the 4-ary modulated signals was evaluated for the case of additive white Gaussian noise (AWGN) and Rayleigh fading channels. Within given SNR range, depending on the environment and modulation used, performance gains of up to 3 dB were realized for 2-ary modulated signals. Only under AWGN channel, 4-ary modulated signals can result higher performance than noncoherent detection.