中文说明：应用背景低密度奇偶校验码（LDPC）是其中最好的执行前向纠错码的今天。特别是对无线通信系统，准循环（QC）LDPC码得到显著注意，因为它们的定期校验矩阵有利于成本效益和低功耗的硬件实现，并允许轻松地调整块长度和代码率。因此，QC-LDPC码中采用了大量的最近的无线通信标准，例如，IEEE 802.16e，DVB-S2，IEEE802.11n。关键技术软件包中包含一个模拟LDPC码的编码和解码中使用的IEEE 802.11n无线环境局域网标准。代码是用Matlab和包括一个灵活的Monte Carlo仿真环境，可以很容易地扩展其他的LDPC码代码；
English Description：
Application background Low-density parity-check (LDPC) codes are among the best performing forward error-correction codes known today. Especially for wireless communication systems, quasi-cyclic (QC) LDPC codes have attracted significant attention as their regular parity check matrices facilitate cost-effective and low-power hardware implementations and allow to easily adjust the block lengths and code rates. Therefore, QC-LDPC codes are employed in a large number of recent wireless communication standards, e.g., IEEE 802.16e, DVB-S2, and IEEE 802.11n. Key Technologythe software package contains a simulation enviroment for LDPC encoding and decoding as used in the IEEE 802.11n wireless LAN standard. The code is written in Matlab and consists of a flexible Monte-Carlo simulation environment that can easily be extended for other LDPC codes.