摘要
广义选择性合并接收(GSC)是一种在接收机复杂度与接收性能之间可以进行折中的分集接收方法,而输出信噪比设阈值的GSC(OT-GSC)在保证一定信噪比的前提下进一步降低接收机复杂度。分析了输出设阈值的广义选择性合并方法在Rayleigh衰落环境下的性能,利用虚支路方法将所涉及的相关随机变量的联合分布转化为独立随机变量的分布,从而推导出了闭式表示的平均误比特率的精确表达式。为了验证所给出公式的正确性,进行了大量的仿真实验,仿真结果与分析公式非常吻合。
Generalized selection combining is a receiver combining technique, which can make a tradeoff between the performance and receiver complexity. The output-thresholded GSC can further decrease the complexity. In this paper we analyze the performance of the output-thresholded generalized selection combining in Rayleigh fading channels. Virtual branch based approach is used to transform the joint PDF of several correlated random variables into a PDF of independent random variables. A closed form expression for the average bit-error-rate of the system is thus obtained. In order to show the effectiveness of our analysis, extensive simulations were performed. Simulation results match with the derived formulation.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2009年第8期1598-1603,共6页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(60772061)
江苏省教育厅高校自然科学基金(05KJB510089)
江苏省青蓝工程中青年学术带头人资助项目
关键词
广义选择联合
平均错误概率
瑞利衰落
generalized selection combining
average error probability
Rayleigh fading
