Lattice-Based Source-Channel Coding in Wireless Sensor Networks

被引：0
|
作者：
Karlsson, Johannes [1 ,2 ]
Skoglund, Mikael [1 ,2 ]
机构：
[1] Royal Inst Technol KTH, Sch Elect Engn, Stockholm, Sweden
[2] Royal Inst Technol KTH, ACCESS Linnaeus Ctr, Stockholm, Sweden
来源：
2011 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | 2011年
基金：
瑞典研究理事会;
关键词：
SIDE INFORMATION; CORRELATED DATA; COMMUNICATION; QUANTIZATION; MODULATION;
D O I：
暂无
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：
We consider the problem of gathering measurements in a wireless sensor network consisting of a large number of sensor nodes. A practical joint source-channel coding scheme is proposed and evaluated. The scheme uses lattices to extend a previously proposed scheme to higher dimensions. The key idea is to use conventional point-to-point communication for a subset of the sensor nodes and side-information aware transmission for the remaining sensor nodes. The selection of sensors is based on their instantaneous channel quality. It is shown that by expanding from one to eight dimensions, a gain of about 1 dB is achievable. The overall transmission delay of the scheme is still very low and it is therefore suitable to use in delay-sensitive applications.
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页数：5
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