High-speed power-efficient indoor wireless infrared communication using code combining - Part II

被引：19

作者：

Akhavan, K ^{[1
]}

Kavehrad, M ^{[1
]}

Jivkova, S ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, CICTR, University Pk, PA 16802 USA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2002年 / 50卷 / 09期

基金：

美国国家科学基金会;

关键词：

adaptive rate; code combining; rate-compatible punctured convolutional (RCPC) codes; wireless infrared;

D O I：

10.1109/TCOMM.2002.802565

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：

In this paper, we examine an infrared link composed of a multibeam transmitter and a direction-diversity receiver, employing code combining. The latter represents an added dimension to the conventional diversity concepts, which are limited to combining the individual received symbols. Rate-compatible punctured convolutional codes are used to encode intensity-modulated on-off keying (OOK) optical power, to create an adaptive environment for efficient utilization of channel spectral bandwidth, to provide a means for accurate channel estimation, and to maintain a guaranteed bit error rate (BER) performance at all receiver positions. It is shown that a BER not exceeding 10(-9) with 99% probability can he achieved at bit rates up to a few hundreds of megabits per second, at very low transmitted power levels.

引用

页码：1495 / 1502

页数：8

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