MMSE-based joint source and relay precoding design for amplify-and-forward MIMO relay networks

Mo, Ronghong; Chew, Yong Huat

doi:10.1109/twc.2009.081294

Cited by 74 publications

(48 citation statements)

References 16 publications

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“…BASED PRECODING DESIGN It has been proved in [8] that the optimal precoding structure in one-way relaying should parallelize the channels between the source and the relay, as well as between the relay and the destination. We are thus motivated to design A 1 , A 2 and A r so as to simultaneously parallelize the bidirectional links in the MIMO two-way relay system.…”

Section: Design Methods 2: Channel Parallelizationmentioning

confidence: 99%

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Joint Source and Relay Precoding Designs for MIMO Two-Way Relay Systems

Wang

Tao

2011

2011 IEEE International Conference on Communications (ICC)

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Abstract-We investigate the source and relay precoding based on the minimum mean-square-error (MSE) criterion for amplifyand-forward (AF) MIMO two-way relay systems. This joint design problem is a highly nonconvex optimization problem. In this work, we present two efficient design algorithms. The first one aims to minimize the total MSE of the two users by alternatively solving three sub-problems and it is iterative in nature. The second design holds a specific precoder structure, which is able to parallelize channels in both the Multiple Access (MAC) and Broadcast (BC) phases of two-way relaying. Based on such structure, the joint precoding design is simply reduced to the joint source and relay power allocation problem. The efficiency of both proposed algorithms is verified via simulation.

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Section: Design Methods 2: Channel Parallelizationmentioning

confidence: 99%

“…Although the joint precoding design for traditional oneway AF relay system has been well studied (see, e.g. [7], [8]), to our best knowledge, the work on the joint precoding design at both the source and relay nodes for two-way relay systems is very limited in the literature.…”

Section: Introductionmentioning

confidence: 99%

Joint Source and Relay Precoding Designs for MIMO Two-Way Relay Systems

Wang

Tao

2011

2011 IEEE International Conference on Communications (ICC)

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“…Guan 과 Luo는 직접 링크를 제거한 3-노드 시스템에서 릴레이 전처리기를 설계하였다 [5] . Mo와 Chew의 논 문에서는 non-convex 문제를 부분적인 하부 문제로 나누는 primal decomposition 방법을 사용해서 기지 국 및 릴레이 전처리기 공동 설계 방법을 제안하였 다 [6] . 한편으로, Rong은 Mo와 Chew가 사용한 모델 에 직접 링크를 추가한 시스템에서 유사한 연구 결 과를 발표하였다 [7] .…”

Section: ⅰ 서 론unclassified

“…We verify that proposed scheme outperforms simple amplify-and-forward(SAF), MMSE relay, and proposed schemes in [1] in terms of both SMSE and sum-rate performances. 단일 릴레이와 단일 사용자가 있는 MIMO 시스 템에서 최적의 릴레이 전처리기 디자인에 관한 연 구로는 다음과 같은 몇 가지를 살펴볼 수 있다 [4][5][6][7] .…”

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Joint Base Station and Relay Precoder Design with Relay Local Channel State Information for Multi-relay Aided Multi-user All-MIMO System

Cho

Jang

Kim³

2012

The Journal of Korean Institute of Communications and Informati

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Key Words : MIMO, relay, SMSE, precoder design, duality ABSTRACTIn this paper, we propose a joint base station(BS) and relay precoders design in multi-relay aided multi-user all-multiple-input multiple-output(MIMO) system. The design criterion is to minimize user sum mean square error(SMSE) with relay sum power constraint(RSPC) where only local channel state information(CSI)s are available at relays. Local CSI at a relay is defined as the CSI of the channel which the relay itself accesses, out of among all the 1st hop and the 2nd hop channel in the system. With BS precoder structure which is concatenated with block diagonalization(BD) precoder, each relay can determine its own precoder using only local CSI. Proposed scheme ※ 본 연구는 지식경제부 및 정보통신산업진흥원의 "대학IT연구센터육성지원사업"의 연구결과로 수행되었음

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“…As a design choice, transmitter preprocessing (TP) or precoding can be invoked to deal with the effects of the MUI and IRI. In the recent past, TP or precoding that is capable of completely eliminating the DL MUI by carrying out required signal processing at the transmitter has received considerable attention among the research community as can be seen in [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] and the references therein. Further, preprocessing approach results in power efficient and low complex MSs.…”

Section: Introductionmentioning

confidence: 99%

Multi-user Performance of Relay-Aided MC-CDMA Downlink System Employing Transmitter Preprocessing Based on Feedback of Vector Quantized CSI

Nagaradjane¹,

Tamilarasi

2015

Wireless Pers Commun

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The achievable bit-error-rate (BER) performance of a relay-aided downlink (DL) multi-carrier code division multiple access (MC-CDMA) cellular system, where multi-user interference (MUI) and inter-relay interference (IRI) are the dominant channel impairments is investigated in this paper, principally from a transmitter signal processing perspective. Specifically, in this paper, we investigate the considered system by employing three cooperation strategies. The MUI and IRI are mitigated with the aid of the transmitter preprocessing (TP) operated at the base station (BS) and relays, respectively. The TP operated at the BS that suppresses the MUI at the relays is based on the maximum-signalto-interference-plus-noise ratio approach, while that operated at the relays that mitigates the IRI relies on the classical transmit minimum-mean-square-error principle. Further, the TP in our work is constructed with the aid of vector-quantized channel state information (VQ-CSI) acquired via feedback channels. Our simulation study shows that relay-aided cooperative DL MC-CDMA system employing TP, results in better achievable BER, as the TP helps in achieving the relay-diversity by mitigating the DL-MUI and IRI at the relays and DMSs, respectively. Furthermore, our study demonstrates that the resultant BER performance of the VQ-CSI based TP remains close to that achieved with the perfect CSI based TP. Hence, we advocate that the feedback of the VQ-CSI to the transmitter for conceiving the preprocessing can be considered as an efficient approach, particularly in a frequency division duplex type wireless system.

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MMSE-based joint source and relay precoding design for amplify-and-forward MIMO relay networks

Cited by 74 publications

References 16 publications

Joint Source and Relay Precoding Designs for MIMO Two-Way Relay Systems

Joint Source and Relay Precoding Designs for MIMO Two-Way Relay Systems

Joint Base Station and Relay Precoder Design with Relay Local Channel State Information for Multi-relay Aided Multi-user All-MIMO System

Multi-user Performance of Relay-Aided MC-CDMA Downlink System Employing Transmitter Preprocessing Based on Feedback of Vector Quantized CSI

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