面向OFDM的同時(shí)同頻全雙工雙向高譜效中繼方案

劉毅; 吳炯; 楊普; 南海涵; 張海林

doi:10.11999/JEIT180451

面向OFDM的同時(shí)同頻全雙工雙向高譜效中繼方案

doi: 10.11999/JEIT180451

劉毅^{1, 2, ,},
吳炯¹,
楊普¹,
南海涵¹,
張海林¹

1.
西安電子科技大學(xué)綜合業(yè)務(wù)網(wǎng)理論及關(guān)鍵技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室 ??西安 ??710071
2.
中國(guó)電子科技集團(tuán)公司數(shù)據(jù)鏈技術(shù)重點(diǎn)實(shí)驗(yàn)室 ??西安 ??710068

基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61671341)，數(shù)據(jù)鏈技術(shù)重點(diǎn)實(shí)驗(yàn)室開放基金(CLDL-20182412)，國(guó)家111計(jì)劃項(xiàng)目(B08038)

詳細(xì)信息

作者簡(jiǎn)介:
劉毅：男，1978年生，教授，研究方向?yàn)閷拵o線通信技術(shù)、空時(shí)編碼與協(xié)作通信技術(shù)、通信對(duì)抗

吳炯：男，1992年生，碩士生，研究方向?yàn)閷拵o線通信技術(shù)、全雙工通信技術(shù)

楊普：男，1995年生，碩士生，研究方向?yàn)閷拵o線通信技術(shù)、全雙工通信技術(shù)

南海涵：男，1996年生，碩士生，研究方向?yàn)閷拵o線通信技術(shù)、全雙工通信技術(shù)

張海林：男，1963年生，教授，研究方向?yàn)閷拵o線通信技術(shù)

通訊作者:
劉毅　yliu@xidian.edu.cn

中圖分類號(hào): TN92
計(jì)量
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- HTML全文瀏覽量: 713
- PDF下載量: 61
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-05-11
- 修回日期: 2018-10-10
- 網(wǎng)絡(luò)出版日期: 2018-11-02
- 刊出日期: 2019-02-01

High Spectrum Efficiency Full-duplex Two-way Relay Scheme for OFDM

Yi LIU^{1, 2
, ,},
Jiong WU¹,
Pu YANG¹,
Haihan NAN¹,
Hailin ZHANG¹

1.
State Key Laboratory of Integrated Service Network, Xidian University, Xi’an 710071, China
2.
Key Laboratory of Data Link, China Electronics Technology Group Corporation, Xi’an 710068, China

Funds: The National Natural Science Foundation of China (61671341), The Foundation of CETC Key Laboratory of Data Link Technology (CLDL-20182412), The National 111 Project (B08038)

摘要

摘要:
針對(duì)同時(shí)同頻全雙工雙向中繼網(wǎng)絡(luò)，該文提出一種對(duì)中繼剩余自干擾信號(hào)具有魯棒性的雙向中繼傳輸方案。該文首先對(duì)中繼剩余自干擾信號(hào)進(jìn)行分析，將無限迭代的剩余自干擾信號(hào)建模成等效多徑信號(hào)，并利用OFDM的循環(huán)前綴對(duì)抗等效多徑現(xiàn)象，以降低中繼剩余自干擾信號(hào)對(duì)系統(tǒng)傳輸性能的影響。在等效多徑方案的基礎(chǔ)上，以系統(tǒng)信干噪比最大化為目標(biāo)，推導(dǎo)出全雙工雙向中繼傳輸?shù)淖罴逊糯笠蜃忧蠼夥椒?。最后，通過仿真驗(yàn)證所提出的雙向中繼傳輸方案的有效性。
- 無線通信 /
- 全雙工 /
- 中繼傳輸 /
- 等效多徑 /
- 放大轉(zhuǎn)發(fā)
Abstract:
For the full-duplex two-way relay network, a two-way relay transmission scheme that is robust to the relay residual self-interference signal is proposed. Firstly, the residual self-interference signal of the relay is analyzed, the infinite self-interfering signal is modeled as an equivalent multipath signal, and the cyclic prefix of OFDM is used to combat the equivalent multipath phenomenon to reduce the residual self-interference signal impact. Based on the equivalent multipath scheme, the paper aims at maximizing the SINR of the system, and deduces the optimal amplification factor solving method of the relay in bidirectional full-duplex relay transmission. Finally, the simulation verifies the correctness of the optimal amplification factor of relay, and the effectiveness of the proposed two-way relay transmission scheme is verified through simulation.
- Wireless communication /
- Full-duplex /
- Relay transmission /
- Equivalent multipath /
- Amplify and forward

HTML全文

圖 1 兩跳全雙工雙向中繼傳輸模型

下載: 全尺寸圖片幻燈片

圖 2 S2節(jié)點(diǎn)到S1節(jié)點(diǎn)的全雙工中繼等效多徑示意圖

下載: 全尺寸圖片幻燈片

圖 3 S1節(jié)點(diǎn)到S2節(jié)點(diǎn)的全雙工中繼等效多徑示意圖

下載: 全尺寸圖片幻燈片

圖 4 全雙工雙向中繼傳輸中不同方案誤碼率性能隨信噪比變化曲線

下載: 全尺寸圖片幻燈片

圖 5 全雙工雙向中繼傳輸中不同方案誤碼率隨中繼節(jié)點(diǎn)剩余環(huán)路干擾變化曲線

下載: 全尺寸圖片幻燈片

表 1 信號(hào)x₁(1)和x₂(1)在各節(jié)點(diǎn)處的傳輸情況

時(shí)隙$i$	0	1	···	$i$	···
${r^{\left( 1 \right)}}(i)$	${{h}_{1r}}{x_1}(1) + {{h}_{2r}}{x_2}(1)$	${(\beta {{h}_{{\rm{li}}}})^1}({{h}_{1r}}{x_1}(1) + {{h}_{2r}}{x_2}(1))$	···	${(\beta {{h}_{{\rm{li}}}})^i}({{h}_{1r}}{x_1}(1) + {{h}_{2r}}{x_2}(1))$	···
${t^{\left( 1 \right)}}(i)$	0	$\beta ({{h}_{1r}}{x_1}(1) + {{h}_{2r}}{x_2}(1))$	···	${(\beta {{h}_{{\rm{li}}}})^{i - 1}}\beta ({{h}_{1r}}{x_1}(1) + {{h}_{2r}}{x_2}(1))$	···
$y_{1}^{\left( 1 \right)}(i)$	${{h}_{{\rm{12}}}}{x_2}(1)$	$\beta {{h}_{1r}}{{h}_{2r}}{x_2}(1)$	···	${(\beta {{h}_{{\rm{li}}}})^{i - 1}}\beta {{h}_{1r}}{{h}_{2r}}{x_2}(1)$	···
$y_{2}^{\left( 1 \right)}(i)$	${{h}_{{\rm{12}}}}{x_1}(1)$	$\beta {{h}_{1r}}{{h}_{2r}}{x_1}(1)$	···	${(\beta {{h}_{{\rm{li}}}})^{i - 1}}\beta {{h}_{1r}}{{h}_{2r}}{x_1}(1)$	···

下載: 導(dǎo)出CSV

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