期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Integration Interval Determination and Decision Threshold Optimization for Improved TRPC-UWB Communication Systems 被引量:2
1
作者 Zhonghua Liang Junshan Zang +2 位作者 Xiaojun Yang Xiaodai Dong huansheng song 《China Communications》 SCIE CSCD 2017年第5期185-192,共8页
Integration interval and decision threshold issues were investigated for improved transmitted reference pulse cluster (iTRPC-) ultra-wideband (UWB) systems. Our analysis shows that the bit error rate (BER) perfo... Integration interval and decision threshold issues were investigated for improved transmitted reference pulse cluster (iTRPC-) ultra-wideband (UWB) systems. Our analysis shows that the bit error rate (BER) performance of iTRPC-UWB systems can be significantly improved via integration interval determination (IID) and decision threshold optimization. For this purpose, two modifications can be made at the autocorrelation receiver as follows. Firstly, the liD processing is performed for autocorrelation operation to capture multi-path energy as much as possible. Secondly, adaptive decision threshold (ADT) instead of zero decision threshold (ZDT), is used as estimated optimal decision threshold for symbol detection. Performance of iTRPCUWB systems using liD and ADT was evaluated in realistic IEEE 802.15.4a UWB channel models and the simulation results demonstrated our theoretical analysis. 展开更多
关键词 ultra-wideband (UWB) improved transmitted reference pulse cluster (iTRPC) integration interval determination (IID) adaptive decision threshold (ADT)
下载PDF
Low-Density Parity-Check Codes for Noncoherent UWB Communication Systems 被引量:2
2
作者 Zhonghua Liang Junshan Zang +2 位作者 Xiaojun Yang Xiaodai Dong huansheng song 《China Communications》 SCIE CSCD 2017年第7期152-162,共11页
In order to guarantee reliable data transmission, powerful channel coding techniques are usually required in noncoherent ultra-wideband(UWB) communication systems. Accordingly, several forward error correction(FEC) co... In order to guarantee reliable data transmission, powerful channel coding techniques are usually required in noncoherent ultra-wideband(UWB) communication systems. Accordingly, several forward error correction(FEC) codes, such as Reed-Solomon and convolutional codes have been used in noncoherent UWB systems to improve the bit error rate(BER) performance. In this paper, low-density parity-check(LDPC) codes are further studied as more powerful FEC candidates for noncoherent UWB systems. Two LDPC codes and the corresponding decoding procedures are presented for noncoherent UWB systems. Moreover, performance comparison between the LDPC codes and other FEC codes are provided for three major noncoherent UWB communication systems, namely, noncoherent pulse position modulation(NC-PPM), transmitted reference(TR) and transmitted reference pulse cluster(TRPC). Both theoretical analysis and simulation results show that the two investigated LDPC codes outperform other existing FEC codes with limited penalty in terms of complexity and therefore they are promising FEC candidates for noncoherent UWB systems with low-cost and low-power consumption. 展开更多
关键词 UWB NONCOHERENT channel coding LDPC codes
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部