The Euclidean Distance Spectra of FDMA-CPM: Algorithms and Applications  

作　　者：LI Bing BAI Baoming Tor Aulin 

机构地区：[1]ISN State Key Laboratory of Xidian University [2]National Key Laboratory of Science and Technology on Space Microwave [3]TCT, Computer Science and Engineering, Chalmers University of Technology

出　　处：《Chinese Journal of Electronics》2014年第4期821-826,共6页电子学报（英文版）

基　　金：supported by the National Basic Research Program of China(973Program)(No.2012CB316100);the National Natural Science Foundation of China(No.61372074,No.61101148);National Key Laboratory Foundation of China(No.9140C530401120C53201)

摘　　要：The performance of multiuser Continuous phase modulation(CPM) over the additive white Gaussian noise channel with coherent maximum likelihood detection is considered. Algorithms are developed to calculate the Euclidean distance spectra employing tree-search and Astar algorithm. The complexity of proposed algorithms are further reduced using trellis minimization. The distance spectrum is then used to evaluate the performance of multiuser CPM systems, which reveals that the performance of multiuser CPM can be significantly improved by using optimized parameters. Both equally-powered and non-equally powered systems are considered. Numerical and simulated results confirm that the proposed algorithms can generate the distance spectra of all systems with lower complexity relative to previous methods and are particularly suited for multi user CPM systems.The performance of multiuser Continuous phase modulation（CPM） over the additive white Gaussian noise channel with coherent maximum likelihood detection is considered. Algorithms are developed to calculate the Euclidean distance spectra employing tree-search and Astar algorithm. The complexity of proposed algorithms are further reduced using trellis minimization. The distance spectrum is then used to evaluate the performance of mul- tiuser CPM systems, which reveals that the performance of multiuser CPM can be significantly improved by using op- timized parameters. Both equally-powered and non-equally powered systems are considered. Numerical and simulated results confirm that the proposed algorithms can generate the distance spectra of all systems with lower complexity relative to previous methods and are particularly suited for multi user CPM systems.

关 键 词：Continuous phase modulation Mini- mum achievable Euclidean distance Achievable spectral efficiency Frequency division multiple access. 

分 类 号：TN761[电子电信—电路与系统]