Maximal capacity nonorthogonal pulse shape modulation  

作　　者：Chen Zhaonan Wang Hongxing Liu Xiguo Zhong Peilin 

机构地区：[1]Department of Electrical and Information Engineering, Naval Aeronautical and Astronautical University [2]Department of Basic Experiment, Naval Aeronautical and Astronautical University

出　　处：《Chinese Journal of Aeronautics》2015年第6期1699-1708,共10页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.60772056);the Special Foundation Project of Taishan Scholar of Shandong Province(ts20081130)

摘　　要：To improve spectral utilization of communication system, a novel nonorthogonal pulse shape modulation （NPSM） based on prolate spheroidal wave function （PSWF） is proposed. The modulation employs nonorthogonal PSWF pulses to transmit information and it shows a higher capacity than traditional orthogonal modulations. The NPSM capacity under the constraint of finite input alphabet, which is determined by parameters of PSWF pulse, is derived. An optimiza- tion model for maximal capacity of NPSM is constructed and an exhaustive self-adapting gradient search algorithm for the model is proposed. A practical NPSM scheme with the maximal capacity is obtained by this search algorithm and it is proved to be superior to orthogonal signaling in the capacity. Our theoretical analysis is validated by numerical simulations and practical tests, and the results show that NPSM outperforms orthogonal modulations in the capacity and has a lower Peak-to-Average Power Ratio.To improve spectral utilization of communication system, a novel nonorthogonal pulse shape modulation （NPSM） based on prolate spheroidal wave function （PSWF） is proposed. The modulation employs nonorthogonal PSWF pulses to transmit information and it shows a higher capacity than traditional orthogonal modulations. The NPSM capacity under the constraint of finite input alphabet, which is determined by parameters of PSWF pulse, is derived. An optimiza- tion model for maximal capacity of NPSM is constructed and an exhaustive self-adapting gradient search algorithm for the model is proposed. A practical NPSM scheme with the maximal capacity is obtained by this search algorithm and it is proved to be superior to orthogonal signaling in the capacity. Our theoretical analysis is validated by numerical simulations and practical tests, and the results show that NPSM outperforms orthogonal modulations in the capacity and has a lower Peak-to-Average Power Ratio.

关 键 词：capacity MODULATION ORTHOGONALITY Prolate spheroidal wave function Quadrature amplitude modulation 

分 类 号：TN914.2[电子电信—通信与信息系统]