【摘 要】
：
A novel iterative technique,the phase descent search (PDS) algorithm,for M-ary phase shift keying (M-PSK) symbols detection was proposed.This technique constrai
【机 构】
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Federal University of Juiz de fora
论文部分内容阅读
A novel iterative technique,the phase descent search (PDS) algorithm,for M-ary phase shift keying (M-PSK) symbols detection was proposed.This technique constrained the solution to have a unit magnitude and it was based on coordinate descent iterations where coordinates were the unknown symbol phases.The PDS algorithm,together with a descent local search (also implemented as a version of the PDS algorithm),was used multiple times with different initializations in a proposed multiple phase detector; the solution with the minimum cost was then chosen as the final solution.The simulation results show that for highly loaded multiuser scenarios,the proposed technique has a detection performance that is close to the single-user bound.The results also show that the multiple phase detector allows detection in highly overloaded scenarios and it exhibits near-far resistance.In particular,the detector has a performance that is significantly better,and complexity that is significantly lower,than that of the detector based on semi-definite relaxation.
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