Array receiving scheme for ultra-wideband WSN OFDM signals

被引：0

作者：

Du, Xiao-Li ^{[1
]}

Lü, Shao-He ^{[1
]}

Wang, Xiao-Dong ^{[1
]}

Zhou, Xing-Ming ^{[1
]}

机构：

[1] Science and Technology on Parallel and Distributed Processing Laboratory, National University of Defense Technology, Changsha,410073, China

来源：

Ruan Jian Xue Bao/Journal of Software | 2014年 / 25卷

关键词：

Alignment - Ultra-wideband (UWB) - Orthogonal frequency division multiplexing - Signal receivers - Signal reconstruction;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This paper proposes an array receiving scheme for ultra-wideband (UWB) OFDM signals in WSN networks. The major feature of the proposed scheme is recovering the UWB OFDM signal by frequency stitching. Firstly, the UWB OFDM signal is divided into multiple sub-bands. Every two adjacent sub-bands share at least one overlapped subcarrier(s), which is used for time alignment later. A sub-signal of the UWB OFDM signal is received on each sub-band by a narrow-band receiver. The received data sets of narrow-band receivers are time aligned by performing peak value alignment retrieval (PVAR) on the shared subcarriers. Then the UWB OFDM signal is recovered by fusing the received data sets according to the result of PVAR. As the implementation of narrow-band receivers only needs low-speed ADCs, the challenge of high-speed ADC in traditional UWB OFDM receiver is addressed. Extensive simulations are performed to demonstrate the validity of the proposed scheme and further look into three performance metrics: (1) synchronization error-tolerance, (2) extensibility, (3) performance under different SNR values. ©2014 ISCAS.

引用

页码：30 / 38