摘要
为了降低移动设备的硬件复杂度,提出了一种基于发射天线选择和切换检测合并的传输机制。利用信噪比的概率密度函数,分别生成了相移键控调制、正交幅度调制、脉冲幅度调制的矩生成函数,将其进行积分,得到了平均符号误码率的精确表达式。将信噪比的概率密度函数进行积分,得到了中断概率的闭合表达式。仿真结果表明,系统的性能可以通过增加发射/接收天线数和衰弱系数、减小衰弱因子来改善。
In order to reduce hardware complexity of mobile devices, a new transmission scheme was proposed based on transmit antenna selection and switch-and-examine combining. The probability density function of the signal-to-noise ra- tio was used to generate the moment generating functions for phase shift keying modulation, quadrature amplitude mod- ulation, and pulse amplitude modulation. By integrating the moment generating functions, the exact average symbol error probability expressions were derived. The exact closed-form outage probability expressions were also derived by integrating the probability density function of the signal-to-noise ratio. The simulation results showed that the system performance was improved with the transmitting/receiving antennas and the fading coefficient increased, while the fading factor decreased.
出处
《山东大学学报（工学版）》
CAS
北大核心
2015年第4期84-90,共7页
Journal of Shandong University（Engineering Science）
基金
国家自然科学基金资助项目(61301139
61304222)
山东省自然科学基金资助项目(ZR2012FQ021)
青岛市国际科技合作资助项目(12-1-4-137-hz)
关键词
发射天线选择
切换检测合并
N-Nakagami信道
平均符号误码率
中断概率
transmit antenna selection
switch-and-examine combing
N-Nakagami fading channels
average symbol error probability
outage probability
