Successive interference cancellation for hierarchical parallel optical wireless communication systems

被引：6

作者：

Okada, H ^{[1
]}

Masuda, K ^{[1
]}

Yamazato, T ^{[1
]}

Katayama, M ^{[1
]}

机构：

[1] Nagoya Univ, Dept Elect Engn & Comp Sci, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

2005 ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS (APCC), VOLS 1& 2 | 2005年

关键词：

D O I：

10.1109/APCC.2005.1554170

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A parallel optical wireless communication system using two-dimensional LED array (2D LED array) and two-dimensional image sensor (2D image sensor) was proposed for the visible light communication systems. In this system, each LED of the 2D LED array is individually modulated, and the 2D image sensor recognizes each LED modulated data. However, the received data pattern will be degraded due to reduction of pixel size and/or defocussing of the LED data pattern. This phenomenon corresponds to the degradation of high spatial frequency components of the received data pattern. To overcome, we employ a hierarchical transmission scheme at a transmitter and a successive interference cancellation at a receiver. By allocating high priority data to low frequency components and low priority data to high frequency components, the reception of high priority data can be guaranteed. We also attempt to apply interference cancellation to overcome the degradation of high spatial frequency components of the received data pattern. By evaluating the bit error rate, we clarify the effect of the proposed system.

引用

页码：788 / 792

页数：5

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