Broadcast strategies for the fading relay channel

Yüksel, Melda; Erkip, Elza

doi:10.1109/milcom.2004.1494996

Cited by 59 publications

(92 citation statements)

References 10 publications

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“…In order to more efficiently exploit the asymmetric link capacities, partial decode-and-forward protocol was first proposed in [5], where a relay forwards part of decoded information to a destination based on superposition coding. Recently, Popovski and de Carvalho [6] investigated the power division between basic data and superposed data for overall rate maximization.…”

Section: Introductionmentioning

confidence: 99%

Partial Information Relaying with Per Antenna Superposition Coding

Kim

Choi

Seo

et al. 2010

IEEE Trans. Commun.

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Abstract-In this letter we propose per antenna superposition coding (PASC) by which partial information can be relayed instead of full information, to exploit the higher capacity of source-relay-destination link. Here, the PASC is designed across antennas, producing basic layer and superposed layer for each data stream per antenna. It is shown that an overall data rate of partial information relaying with PASC can be increased beyond that offered by full information relaying by virtue of fast forwarding of partial information over relatively better link.Index Terms-Cooperative relaying, multiple antennas, per antenna superposition coding (PASC), partial information, rate matching, power allocation.

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Section: Introductionmentioning

confidence: 99%

Partial Information Relaying with Per Antenna Superposition Coding

Kim

Choi

Seo

et al. 2010

IEEE Trans. Commun.

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“…이와 비슷한 연구로 단일 릴 레이 노드 환경에서의 중첩 부호 전송 방식에 대한 연구 [7,13] , 다중 릴레이 노드 환경에서 중첩 부호 전 송 [14][15][16] , 양방향 릴레이 통신 시 단일 레이어 전송 이 [17] 있다. 본 논문은 [7], [13]과 동일하게 직접 경로가 존재하는 단일 릴레이 시스템 모형과 중첩 부호 기반의 원천 노드 송신 신호를 채택한다. 그러 나 기존 기법과는 [7,13] [7,[13][14][15][16][17] 성능 도출 시 릴레이 위치를 고려하지 않았 으며 일부 연구는 [7,14,17] 첫 번째 시간 슬롯에서 원천 노드는 점진적으로 품질이 개선되는 두 소스 코딩 레이어를 중첩 부호 로 전송한다 [7] .…”

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“…본 논문은 [7], [13]과 동일하게 직접 경로가 존재하는 단일 릴레이 시스템 모형과 중첩 부호 기반의 원천 노드 송신 신호를 채택한다. 그러 나 기존 기법과는 [7,13] [7,[13][14][15][16][17] 성능 도출 시 릴레이 위치를 고려하지 않았 으며 일부 연구는 [7,14,17] 첫 번째 시간 슬롯에서 원천 노드는 점진적으로 품질이 개선되는 두 소스 코딩 레이어를 중첩 부호 로 전송한다 [7] . 즉, 원천 노드의 송신 신호는 다음 과 같이 쓸 수 있다.…”

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“…[7,8] . 제안 기법뿐만 (`Prop') 아니라 기존의 중첩 부호를 릴레이 없이 직접 전송하는 기법 [11] ('DSC'), 릴레 이가 중첩 부호를 AF로 전달하는 기법 [7] ('CSCA'), 릴레이가 자신의 중첩부호 복호결과에 따라 레이어 를 선택적으로 DF하는 기법의 [13] (`CSCD') 성능도 …”

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Layer Selective Cooperation Using Superposition Coding for Reduction of Expected Distortion

Wang¹,

Park²,

Kim³

2012

The Journal of Korean Institute of Communications and Informati

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This paper considers a cooperative communication system with a single relay node, where two-layer superposition coding and successive decoding is employed to reduce the expected distortion of a Gaussian source delivered. For the system, we propose a relay scheme which forwards an appropriate relay signal at the relay node, based on the local decoding result of layers and the decoding result of layers at the destination node fed back to the relay node. In the scheme, the relay signal is designed not only by applying decode-and-forward but also by applying amplify-and-forward to reduce the outage probability in final decoding of each layer. The performance of the proposed scheme is evaluated numerically in terms of the expected distortion at various relay locations using outage probabilities derived. The results show that the proposed scheme outperforms the conventional schemes in most cases of the relay location and the gain gets larger when the relay node is closer to the source node in particular.

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Superposition coding cooperative relaying communications: Outage performance analysis

Jia

Yang

et al. 2011

Int J Communication

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SUMMARYUser cooperative is a powerful tool to combat fading and to increase robustness for communications over wireless channels. For cooperative relaying communications, the outage probability and the expected rate (throughput) can be greatly improved when the superposition coding relaying (SC-relaying) strategy is employed. Under the assumption of high signal-to-noise ratio (SNR), this work contributes to a comprehensive investigation on the outage probability and the throughput of cooperative relaying communications system with only two-level rate SC. Through strict mathematical process and deduction, the approximated close-form expressions of the outage probabilities and the throughput of system are obtained for the first time. Based on the results, the impact of power and channel allocation fractions on system performance is carried out. With the aim of maximal throughput, a set of optimal solutions of system parameters are obtained by employing difference evolution arithmetic. The comparative numerical analyses show that the approximation results are feasible and correct.

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Broadcast strategies for the fading relay channel

Cited by 59 publications

References 10 publications

Partial Information Relaying with Per Antenna Superposition Coding

Partial Information Relaying with Per Antenna Superposition Coding

Layer Selective Cooperation Using Superposition Coding for Reduction of Expected Distortion

Superposition coding cooperative relaying communications: Outage performance analysis

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