用于快速无线互联网和多媒体服务的QAM方案

2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300) Pub Date : 2002-06-18 DOI:10.1109/ICCE.2002.1013936

B. Fong, G. Hong, A. Fong

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引用次数: 1

摘要

无线宽带通信系统提供适合快速互联网接入的高数据传输速率。提出了一种局部多点分布服务(LMDS)的调制方案，提高了该系统在阴雨天气条件下的覆盖能力。在对26ghz载波的多种调制方案进行比较后，发现16-QAM系统在覆盖范围和接收器结构复杂性之间提供了良好的折衷。降雨衰减的影响随载波频率的增加而增加。在干燥天气和大雨天气下，系统性能会有很大差异。

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A QAM scheme for fast wireless Internet and multimedia services

Wireless wideband communication systems provide high data transmission rates suitable for fast Internet access. This paper presents a modulation scheme for Local Multipoint Distribution Service (LMDS), which improves coverage under rainy weather conditions. Following a comparison of a number of modulation schemes with a 26 GHz carrier, a 16-QAM system is found to offer good compromise between coverage and receiver structure complexity. The effects of rain attenuation increase with carrier frequency. System performance varies significantly depending on whether the system is operated on a dry day or under heavy rain.

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来源期刊

2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300)

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