【摘要】 基于无线中继的概念,研究了多跳无线信道及其2个简单的多跳和多路由分集系统。在平坦瑞利衰落下,分别导出了这些系统再生和非再生中继时的BPSK平均误码率。数值分析和仿真表明,在多跳信道和多跳分集系统中误码率随跳数的增加而下降;多路由分集系统随路由数的增多性能有较大改善。比较了非再生中继性能在低信噪比时优于再生中继,在高信噪比时两者性能相似。更多还原

【Abstract】 Based on the concept of wireless relaying, this paper investigates multi-hop wireless channel and its two simple diversity systems; the multi-hop and multi-route diversity systems. Their expressions of average BER for BPSK of non-regenerative relaying and regenerative relaying are derived in flat Rayleigh fading channel respectively. Numerical analysis results and simulations show good agreements. The performance of multi-hop channel and multi-hop diversity system is degraded as the number of hops increases. The performance of multi-route diversity system is improved as the number of routes increases. The performance of non-regenerative relaying is superior to that of regenerative relaying at low average signal noise ratio (SNR), but the performance of the both is similar at high average SNR.更多还原