A DS-CDMA Interference Cancellation Technique for Body Area Networks

被引：4
|
作者：
Yang, Wen-Bin
Sayrafian-Pour, Kamran
机构：
来源：
2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2010年
关键词：
Body area networks; Interference cancellation; Direct-sequence code division multiple access; Fast Walsh-Hadamard transformation; MULTIPLE-ACCESS CHANNELS; MULTIUSER DETECTORS;
D O I：
10.1109/PIMRC.2010.5671929
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A low complexity Parallel Interference Cancellation (PIC) technique that is applicable to body area networks (BANs) is presented. Using Direct-Sequence Code Division Multiple Access (DS-CDMA), the technique aims at suppressing interference caused by rapid changes in relative sensors position due to body parts motion as well as interference from adjacent BANs. Interference signal is estimated using a relationship between cyclic correlation of the received signal and interferer code without requiring any knowledge of the channel condition. The codes for the multi-sensor DS-CDMA communication are constructed by using a set of m-sequences. The cyclic correlation is performed using Fast Walsh-Hadamard Transform (FWHT) which exhibits low computational complexity. In addition to low complexity, the proposed technique does not require complicated channel condition estimation and has no convergence issues. The uncoded Bit Error Rate (BER) performance of the proposed interference cancellation over a body-surface channel is calculated and compared with the conventional scheme.
引用
收藏
页码：752 / 756
页数：5
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