标题： 编码多载波系统在准静态衰落信道上的误码率分析 显示英文标题

标题： Error Rate Analysis for Coded Multicarrier Systems over Quasi-Static Fading Channels

摘要： 几种最近的标准，如IEEE 802.11a/g、IEEE 802.16和ECMA多频段正交频分复用（MB-OFDM）用于高速数据率超宽带（UWB），在准静态衰落信道上采用比特交织卷积编码的多载波调制。 由于缺乏适用于这种流行系统和信道模型的适当误码率分析技术，我们提出了两种新颖的分析方法，用于计算在频率选择性准静态信道和非理想交织条件下工作的编码多载波系统的误码率（BER）。 在第一种方法中，对于每个信道实现计算系统的近似性能，这适用于获得中断BER性能（例如MB-OFDM系统的常见性能指标）。 第二种方法假设频率域子载波信道增益服从瑞利分布，并且知道其相关矩阵，可以用来直接获得平均BER性能。 这两种方法适用于采用正交幅度调制（QAM）的卷积编码交织多载波系统，并且还能够考虑窄带干扰（建模为一系列单音干扰器的总和）。 为了说明所提出分析的应用，这两种方法被用来研究受单音干扰影响的MB-OFDM系统的性能。 显示英文摘要

摘要： Several recent standards such as IEEE 802.11a/g, IEEE 802.16, and ECMA Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) for high data-rate Ultra-Wideband (UWB), employ bit-interleaved convolutionally-coded multicarrier modulation over quasi-static fading channels. Motivated by the lack of appropriate error rate analysis techniques for this popular type of system and channel model, we present two novel analytical methods for bit error rate (BER) estimation of coded multicarrier systems operating over frequency-selective quasi-static channels with non-ideal interleaving. In the first method, the approximate performance of the system is calculated for each realization of the channel, which is suitable for obtaining the outage BER performance (a common performance measure for e.g. MB-OFDM systems). The second method assumes Rayleigh distributed frequency-domain subcarrier channel gains and knowledge of their correlation matrix, and can be used to directly obtain the average BER performance. Both methods are applicable to convolutionally-coded interleaved multicarrier systems employing Quadrature Amplitude Modulation (QAM), and are also able to account for narrowband interference (modeled as a sum of tone interferers). To illustrate the application of the proposed analysis, both methods are used to study the performance of a tone-interference-impaired MB-OFDM system.