A low-power multimedia communication system for indoor wireless applications

1999 IEEE Workshop on Signal Processing Systems. SiPS 99. Design and Implementation (Cat. No.99TH8461) Pub Date : 1999-10-20 DOI:10.1109/SIPS.1999.822353

M. Goel, S. Appadwedula, N.R. Shambhag, K. Ramchandran, D.L. Jones

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引用次数: 28

Abstract

A low-power multimedia communication system is proposed. Power reductions are achieved by employing dynamic algorithm transforms and joint source-channel coding to reconfigure the system in the presence of variabilities in source and channel data. Configuration parameters are source rate, error correction capability of the channel encoder/decoder, number of powered-up fingers in the RAKE receiver and transmit power of the power amplifier. Energy-optimum configurations are obtained by minimizing energy consumption under the constraints of end-to-end distortion and total transmission rate. The proposed system is tested over a variety of images, distances (ranging from 2 to 100 meters) and multipath channels. Simulation results using 0.18 /spl mu/m, 2.5 V CMOS parameters show that the reconfigurable system can achieve average energy savings of 59% as compared to a fixed system designed for the worst case. Also, the proposed system consumes 16% less energy as compared to a transmit-power-controlled system.

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用于室内无线应用的低功耗多媒体通信系统

提出了一种低功耗多媒体通信系统。通过采用动态算法变换和联合源信道编码，在源信道数据存在可变性的情况下重新配置系统，实现了功耗降低。配置参数为信源速率、信道编码器/解码器的纠错能力、RAKE接收机上电手指数和功率放大器的发射功率。在端到端失真和总传输速率约束下，通过最小化能量消耗获得能量最优配置。该系统在各种图像、距离(从2米到100米)和多径信道上进行了测试。使用0.18 /spl mu/m, 2.5 V CMOS参数的仿真结果表明，与针对最坏情况设计的固定系统相比，可重构系统可实现59%的平均节能。此外，与传输功率控制系统相比，所提出的系统消耗的能量少16%。

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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来源期刊

1999 IEEE Workshop on Signal Processing Systems. SiPS 99. Design and Implementation (Cat. No.99TH8461)

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