IEEE802.15.4a的UWB信道模型的误码率分析
首发时间:2008-04-09
摘要:本文分析了超宽带信道下反极性正交二进制信号的误码率,给出了误码率的解析表达式和评估方法。所考虑的信道模型是IEEE 802.15.4a的UWB信道模型,并考虑了所有关键参数的影响,包括簇平均到达率,簇衰减因子,脉冲平均到达率,簇内脉冲衰减因子,功率时延剖面(PDP)参数和Nakagami衰落信号的分布。对于IEEE 802.15.4a的UWB信道,簇到达时间特定为泊松过程,簇内脉冲的到达时间被模拟为超指数随机变量。对于这种联合连续Nakagami衰落和离散泊松随机变量的UWB信号,提出一种评估误码性能的系统分析方法,这种改进的分析模型对IEEE 802.15.4a信道下UWB信号的性能评估是比较有用的。
关键词: 超宽带(UWB) IEEE802.15.4a信道模型 误码率(BER)
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BER Analysis of the IEEE 802.15.4a UWB Channel Model
Abstract:This paper provides the bit error rate (BER) analysis of the antipodal and orthogonal binary signals under the ultra-wideband (UWB) channel. We offer an analytical expression and its evaluation formula for the BER. The channel model we consider is the IEEE 802.15.4a UWB channel. We take into account of the impact of all the key parameters, including intercluster arrival rate, cluster decay constant, the inter-ray arrival rate, ray decay constant, parameters of the power delay profile (PDP), and the distribution of a Nakagami fading signal. For the IEEE 802.15.4a UWB channel, the effects of clustering are characterized by a Poisson process, and the inter-ray arrival time is modeled as the hyperexponential random variable. We propose a systematic analytical method to evaluate the BER performance of the UWB signal associated with such joint continuous Nakagami and discrete Poisson random variable. The developed analytical model is useful in evaluating the performance of an UWB signal in the IEEE 802.15.4a channel.
Keywords: Ultra-wideband (UWB);IEEE 802.15.4a channel model;bit error rate (BER)
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No.2025021352212077****
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