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| 1 | Belief-Propagation-Approximated Decoding of Low-Density Parity-Check Codes显示文摘In this paper, we propose a new reduced-complexity decoding algorithm of Low-Density Parity-Check (LDPC) codes, called Belief-Propagation-Approximated (BPA) algorithm, which utilizes the idea of normalization and translates approximately the intricate nonlinear operation in the check nodes of the original BP algorithm to only one operation of looking up the table. The normalization factors can be obtained by simulation, or theoretically. Simulation results demonstrate that BPA algorithm exhibits fairly satisfactory bit error performance on the Additive White Gaussian Noise (AWGN) channel. | SONGHui-shi ZHANGPing | 2004 | The Journal of China Universities of Posts and Telecommunications2004，11，1： | 4 |
| 2 | 迭代检测算法在比特交织编码调制系统中的比较研究显示文摘迭代检测技术不仅局限于在传统的级联码系统中的应用,还可用于解决现代数字通信中的许多检测/译码问题。随着Turbo码的出现,人们对迭代译码算法进行深入研究,并提出一些简化译码算法。比特交织编码调制及迭代检测(bitinterleaved coded modulation with iterative decoding,BICM-ID)是一种高效数据传输系统。比特交织和迭代译码是BICM-ID系统具有卓越性能的关键因素,译码算法的选择不仅影响接收机的性能,也决定了系统的复杂度。文中研究迭代译码算法对BICM-ID系统性能的影响,分析各种译码算法的计算复杂度。仿真结果表明log-APP算法有好的性能同时复杂度也高,简化的译码算法能降低译码器的复杂度,但会带来一定的性能损失;随着信道条件的改善,算法简化带来的性能损失也随之减小。 | 邹雪兰 酆广增 | 2008 | 南京邮电大学学报(自然科学版)2008，28，2： | 3 |
| 3 | Performance of iteratively decoded bit-interleaved coded modulation with chaos based interleaving strategies显示文摘Bit-interleaved coded modulation with iterative decoding (BICM-ID) is a bandwidth efficient trans- mission scheme which is well suitable for next-generation mobile communications. The interleaver design is critical to the high performance of BICM-ID. In this paper we investigate the application of the chaos theory to the interleaver design to further improve the performance of BICM-ID. A new interleaving scheme based on the chaos theory is proposed. Compared with the random interleaver, the proposed approach has the ad- vantages including lower system delay and higher transmission efficiency. Simulation results in both additive white Gaussian noise (AWGN) channel and Rayleigh fading channel are provided, which demonstrates that the new interleaver is better than the random interleaver and exhibits excellent performance when applied to the BICM-ID system. | ZOU XueLan LIU WeiYan FENG GuangZeng | 2010 | Science China(Information Sciences)2010，53，4： | 1 |
| 4 | 基于混沌交织的比特交织编码调制及迭代译码系统性能分析显示文摘比特交织编码调制及迭代译码(BICM-ID)是适合下一代移动通信系统的一种高效数据传输方式.交织器的设计是影响BICM-ID系统卓越性能的一个关键因素.为了进一步提高BICM-ID系统性能,本文研究了混沌理论在交织器设计中的应用,提出一种新的混沌交织算法,与伪随机交织器相比该方案具有更低的系统时延和更高的传输效率.加性Gauss白噪声信道和Rayleigh衰落信道中的性能仿真结果表明,本文所提出的混沌交织器比伪随机交织器的性能要好,在BICM-ID系统中具有卓越的性能. | 邹雪兰 刘伟彦 酆广增 | 2011 | 中国科学:信息科学2011，41，1： | 1 |
| 5 | A Study of the Simulation Platform of WCDMA显示文摘In this paper, we present a new simulation platform of 3G (the third-generation mobile communication). Combined with the concept of Software Defined Radio (SDR) and complied with the 3rd Generation Partnership Project (3GPP) proposal, first, we build up a general structure platform of the downlink physical layer based on 3G WCDMA (FDD) in COSSAP software package, then study such key technology of 3G as turbo encoders and decoders, RAKE receivers. The simulation result is similar to relevant documents. As a result, it could be applied as a basic platform to do further research on the key technology in SDR field. | ZHUSong-jian SONGMei RENLi-gang SONGJun-de | 2004 | The Journal of China Universities of Posts and Telecommunications2004，11，1： | 1 |
| 6 | New Soft Output Viterbi Algorithm for Mobile Communication System显示文摘软产量 Viterbi (SOVA ) 是对硬件实现合适的一个涡轮译码算法。但是它的表演不象最大值一样好一个以后的概率(地图) 算法。改进它的表演因此是很重要的。在 SOVA 的 non-correlationbetween 最小和最大似然路径被分析。两条可能性路径的公制的差别被用作反复的软信息,它不与 traditionalS 卵一样。建议 SOVA 的表演被模拟表明。为有到 4 dB 的从 1 dB 的信号噪声比的 1 种 024 位的框架尺寸和 9 次重复,试验性的结果证明新 SOVA 算法获得更多的大约 0。4 dB 并且 0。编码的 2 dB 在 1 X 10 ~ 的误码率(BER ) 多于传统的 SOVA 和 Bi-SOVA 算法增加(-4) ,当潜伏仅仅是译码的双性人方向 SOVA 的一半时。 | YI Qing-ming SHI Min | 2006 | Semiconductor Photonics and Technology2006，12，4： | 0 |
| 7 | 一种Turbo码高速并行译码算法显示文摘针对Turbo码MAP译码算法运算量、存储量大和译码延时长的问题,基于双滑动窗的基本思想,提出一种高速并行的译码算法。计算机仿真表明,该算法是存储量与译码性能的良好折衷。 | 徐丹 | 2008 | 信息通信技术2008，2，5： | 0 |
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