本文關(guān)鍵詞：高斯信源下多中繼網(wǎng)絡(luò)的分布式壓縮轉(zhuǎn)發(fā)系統(tǒng)與優(yōu)化設(shè)計(jì)　出處：《數(shù)據(jù)采集與處理》2017年01期 　論文類型：期刊論文

  更多相關(guān)文章： 高斯信源 壓縮轉(zhuǎn)發(fā) 功率分配 多中繼網(wǎng)絡(luò) 放大轉(zhuǎn)發(fā)

【摘要】：提出了一種模擬高斯信源通過多中繼網(wǎng)絡(luò)進(jìn)行壓縮轉(zhuǎn)發(fā)的系統(tǒng)模型,該系統(tǒng)模型可以描述實(shí)際中傳感器受限于環(huán)境或成本,只能進(jìn)行簡(jiǎn)單的模擬信號(hào)發(fā)送,而中繼器能夠進(jìn)行復(fù)雜的分布式信源編碼和信道編碼的傳感中繼網(wǎng)絡(luò)。本文提出了該系統(tǒng)的理論分析框架,對(duì)傳感器網(wǎng)絡(luò)的分布式信源編碼問題,采用CEO理論建立多中繼網(wǎng)絡(luò)的率失真函數(shù),結(jié)合Shannon信道容量理論,將傳感器網(wǎng)絡(luò)與數(shù)字通信網(wǎng)絡(luò)建立聯(lián)系。本文提出了系統(tǒng)的優(yōu)化設(shè)計(jì)理論方法,在總功率受限條件下,在傳感器網(wǎng)絡(luò)和通信網(wǎng)絡(luò)之間進(jìn)行功率分配,使信噪比性能達(dá)到最大。理論分析和仿真結(jié)果表明,本文提出的方法比模擬中繼轉(zhuǎn)發(fā)系統(tǒng)在低信噪比區(qū)域抗干擾性能更好。在高信噪比區(qū)域,隨著總信噪比約束的增大,可提高至10dB以上。
[Abstract]:This paper presents a system model of simulating Gao Si source compression and forwarding through multi-relay network. The system model can describe the sensor is limited by environment or cost in practice, and can only send a simple analog signal. The repeater can carry out complex distributed source coding and channel coding sensor relay network. In this paper, a theoretical analysis framework of the system is proposed to address the problem of distributed source coding in sensor networks. The rate-distortion function of multi-relay network is established by using CEO theory, and the Shannon channel capacity theory is combined. In this paper, the optimal design method of the system is proposed, which can distribute the power between the sensor network and the communication network under the condition of limited total power. The theoretical analysis and simulation results show that the proposed method has better anti-jamming performance in low signal-to-noise ratio region than analog relay forwarding system, and in high signal-to-noise ratio region. With the increase of total signal-to-noise ratio (SNR) constraint, it can be increased to more than 10 dB.
【作者單位】： 南京航空航天大學(xué)電子信息工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61471192,61371169)資助項(xiàng)目 江蘇省高等學(xué)校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目
【分類號(hào)】：TN92
【正文快照】： 引言 無線中繼技術(shù)能夠有效地對(duì)抗信道衰落、擴(kuò)大無線網(wǎng)絡(luò)覆蓋范圍、提氋系統(tǒng)容量、增加分集增益、提高信息的可靠性以及改善通信質(zhì)量,且能廣泛應(yīng)用于各類無線通信系統(tǒng)。如衛(wèi)星通信和微波中繼通信系統(tǒng)就是經(jīng)典的無線中繼通信系統(tǒng)。移動(dòng)通信中采用中繼站擴(kuò)大信號(hào)覆蓋范圍,提高

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 趙安邦;王文生;崔慧娟;唐昆;;廣義高斯信源的自適應(yīng)編碼研究[J];電視技術(shù);2006年07期

相關(guān)博士學(xué)位論文 前1條

1 徐寅飛;向量高斯多終端信源編碼[D];東南大學(xué);2016年

，

本文編號(hào)：1390895