分簇?zé)o線傳感器網(wǎng)絡(luò)中根校驗(yàn)全分集LDPC碼設(shè)計(jì)與能效分析

郭銳; 劉春于; 張華; 包建榮; 姜斌

doi:10.11999/JEIT141294

分簇?zé)o線傳感器網(wǎng)絡(luò)中根校驗(yàn)全分集LDPC碼設(shè)計(jì)與能效分析

doi: 10.11999/JEIT141294

1.
(杭州電子科技大學(xué)通信工程學(xué)院杭州 310018) ②(中國航天電子技術(shù)研究院衛(wèi)星導(dǎo)航系統(tǒng)工程中心北京 100094) ③(東南大學(xué)移動通信國家重點(diǎn)實(shí)驗(yàn)室上海 200433)

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出版歷程
- 收稿日期: 2014-10-09
- 修回日期: 2015-04-03
- 刊出日期: 2015-07-19

Full Diversity LDPC Codes Design and Energy Efficiency Analysis for Clustering Wireless Sensor Networks

1.
(Communication College, Hangzhou Dianzi University, Hangzhou 310018, China)
2.
(GNSS System Engineering Center, China Academy of Aerospace Electronics Technology, Beijing 100094, China)

摘要

摘要: 高效的差錯控制編碼技術(shù)(ECC)可以增強(qiáng)無線傳感器網(wǎng)絡(luò)傳輸穩(wěn)定性、網(wǎng)絡(luò)的能量利用效率。為了充分利用無線傳感器網(wǎng)絡(luò)中蘊(yùn)含的分集資源應(yīng)對惡劣信道環(huán)境導(dǎo)致的高差錯概率，該文研究了基于根校驗(yàn)全分集LDPC碼的差錯控制編碼技術(shù)。首先，提出在分簇?zé)o線傳感器網(wǎng)絡(luò)中，基于根校驗(yàn)全分集LDPC碼的編碼方案；其次，設(shè)計(jì)了適用于所提方案的速率兼容全分集LDPC碼字結(jié)構(gòu)。最后，分析了所提編碼系統(tǒng)的能效。仿真結(jié)果表明，在信道條件較差的環(huán)境中(仿真中，信道噪聲大于410-4 mW)，采用該文的編碼方案，能夠顯著提高無線傳感器網(wǎng)絡(luò)的能效。
- 無線傳感器網(wǎng)絡(luò) /
- 差錯控制編碼 /
- 能效 /
- 全分集 /
- 低密度奇偶校驗(yàn)
Abstract: Efficient Error Control Coding (ECC) can be used to enhance the stability and energy efficiency of Wireless Sensor Networks (WSNs). In order to deal with high bit error probability due to poor channel environment in WSNs, the paper study the error control coding techniques based on full diversity root check Low Density Parity Check (LDPC) codes, which takes advantage of the diversity resources in a wireless sensor network. Firstly, the encoding scheme based on root check full diversity LDPC code is put forward in clustering WSNs, then the diversity gain is analyzed. Secondly, the structure of rate compatible full diversity LDPC codes for the proposed scheme is proposed. Finally, the energy efficiency of the coding WSNs system is given. Simulation results show that the proposed coding scheme can significantly improve the energy efficiency of wireless sensor networks in poor channel conditions environment (In the simulation, channel noise is greater than410-4 mW).
- Wireless Sensor Networks (WSNs) /
- Error Control Coding (ECC) /
- Energy efficiency /
- Full diversity /
- Low Density Parity Check (LDPC)

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