莱斯衰落信道下GSSK性能分析

Performance Analysis of GSSK Modulation in Rician Channel

广义空移键控(Generalized Space Shift Keying modulation,GSSK)是一种新型的多天线传输技术,利用天线组发送天线索引传递信息。通过对莱斯衰落信道下GSSK性能的深入分析,系统了解了GSSK的抗莱斯信道衰落能力。发送端介绍了GSSK的传输原理及天线映射规则;接收端对天线组序列采用最大似然算法,以保证发送天线组能被正确检测,通过分析GSSK误码率上界,清晰展示了天线检测解调环节的误码问题。最后,仿真分析GSSK在莱斯信道下的性能,与SSK进行了比较,总结了GSSK的性能劣势并提出了改进意见。

GSSK（Generalized Space Shift Keying）modulation,as a new kind of multiple antenna transmission technology, employs antenna group to send the antenna index for information transmitting. Based on in-depth analysis of GSSK performance in the anti-Rician channel fading capability of GSSK is systematically grasped. The transmission principle and antenna mapping rules of GSSK in the sender are given in detail, while at the receiving end, the maximum-likelihood algorithm is adopted for the antenna group sequence, thus to ensure that the position of sending antenna group could be correctly detected. In addition, via calculating the BER upper bound of GSSK, the BER problem in antenna detection could be clearly revealed. Finally, the simulation is done GSSK performance in Rician channel, and the comparison with SSK（Space Shift Keyingand） indicates the performance disadvantage of GSSK, and the authous also give the improvement suggestions.