A 4 Mbps infrared wireless communication system dedicated to mobile computing

H. Uno, K. Kumatami, H. Okuhata, I. Shirakawa, T. Chiba
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引用次数: 0

Abstract

A high performance and low power architecture is devised for a 4 Mbps infrared wireless communication system dedicated to the mobile computing. In this architecture, 4PPM(4-Pulse Position Modulation) infrared signals detected by an infrared receiver are digitized into TTL interface level pulses, and the digitized pulses are demodulated by a 1-bit digital demodulator. To improve the dynamic range of the link length, a 4PPM demodulator is synthesized to implement a demodulation algorithm which is constructed so as to accommodate the output tolerance of the infrared receiver. A part of experimental results shows that the realized 4 Mbps infrared communication system can achieve an error free link in the range of 0-140 cm at 90 mW power consumption.
专用于移动计算的4mbps红外无线通信系统
针对移动计算专用的4mbps红外无线通信系统,设计了一种高性能、低功耗的系统架构。在该结构中,红外接收机检测到的4PPM(4脉冲位置调制)红外信号被数字化为TTL接口电平脉冲,数字化后的脉冲由1位数字解调器解调。为了提高链路长度的动态范围,合成了一个4PPM的解调器,实现了一种适应红外接收机输出容差的解调算法。部分实验结果表明,所实现的4 Mbps红外通信系统可以在90 mW的功耗下实现0-140 cm范围内的无误差链路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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