Error Probability Analysis of Bidirectional Relay Systems Using Alamouti Scheme

To, Duc; Choi, Jinho; Kim, I

doi:10.1109/lcomm.2010.08.100691

Cited by 35 publications

(26 citation statements)

References 7 publications

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“…For example, l(x)∈{0, 1,…, C − 1} is the label index of x in C. Since the CSI is assumed to be perfectly known at R and the input symbols u and u are equiprobable, under the maximum likelihood (ML) criterion, the estimate of z, denoted by z ′ , is found as [4,16,17] z ′ = arg max…”

Section: System Modelmentioning

confidence: 99%

“…In addition, it is noteworthy that the probability of the correct detection is 1/(C − 1), if both the phases have errors [17]. Therefore, averaging the SEPs over the two phases, the instantaneous SEP at source node S m , denoted by P EtoE,m|h , is given by…”

Section: Optimisation Problem Analysismentioning

confidence: 99%

“…However, after some analytical and simulated trials, we believe that the proposed PA scheme is more preferable to others what we can come up with.]. In addition, based on the normalised total power constraint in (11) and the preceding result in (17) and (18), we can introduce the NOPA scheme as follows:…”

Section: Optimisation Problem Analysismentioning

confidence: 99%

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Near optimal power allocation in two‐way relay systems with physical layer network coding

et al. 2015

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In this study, the authors examine the power allocation (PA) in a two-way relay system, where the relay adopts physical layer network coding based on decode-and-forward protocol. In the PA, the optimisation objective is to minimise the end-to-end symbol error probability (SEP) under a total power constraint. Since the optimal power allocation (OPA) scheme requires numerical methods (for exhaustive search) to find the solution, which might be infeasible for practical systems, the authors propose a near optimal power allocation (NOPA) scheme that has a closed-form solution by studying the properties of the OPA scheme. The asymptotic SEP expression of the proposed NOPA scheme is also derived. Simulation results show that the performance of proposed NOPA scheme is quite close to that of the OPA scheme. Furthermore, it is shown that the NOPA scheme can provide asymptotic SNR gains of 1.76 dB and 2.22 dB over two well-known schemes.

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Section: System Modelmentioning

confidence: 99%

Section: Optimisation Problem Analysismentioning

confidence: 99%

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Near optimal power allocation in two‐way relay systems with physical layer network coding

et al. 2015

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“…Since a closed-form solution of the total power consumption for the proposed IPA scheme is very complicated, we consider the dual case when M = N, since the system is more efficient on this antenna configuration. For notational convenience, we use the pair (M, K) to represent the system configuration, e.g., (2,4) represents that both the source nodes have M = 2 antennas and a single relay is selected out of K = 4 relays. We investigate the behaviors of E…”

Section: Transmit Power Allocationmentioning

confidence: 99%

“…Relay selection (RS) diversity can also be exploited in MIMO TWRC in conjunction with transmit diversity. For instance, To et al [2] considered a two-way relay system using the Alamouti's code at the two sources while there is only one antenna at a relay. Gong et al [3] studied a system consisting of two singleantenna sources and a single relay of two-antenna.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of joint relay selection and transmission schemes in multiple-antenna two-way relay systems

Chen

Wang²,

Yang

2015

J Wireless Com Network

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In this paper, we consider a two-way relay system with two multi-antenna sources and multiple single-antenna relays and study the performances for various transmission schemes with the assumption that perfect channel state information (CSI) is available at both the sources and the relays. Although a transmission scheme that combines source beamforming and relay selection (BF-RS) is known to improve a system performance, its performance has not been theoretically analyzed yet. In the paper, we focus on the performance analysis in terms of the symbol error probability (SEP) for the BF-RS scheme. The analytical upper and lower bounds of the end-to-end system SEP are derived in the closed form, and the asymptotic SEP expression is given in high SNR regime. By both analytical and simulation results, it is clearly shown that a full transmit and relay selection diversity gain can be achieved without code rate loss. The SEP curves from simulations show that our derived bounds can predict the performance accurately. Based on the derived analytical results, we propose an individual power allocation (IPA) scheme to save the total transmit power. We show that the IPA scheme can result in considerable energy saving with a comparable SEP performance.

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Differential space–time network coding in MIMO two‐way relay channel network

Jin

Han

Jin

et al. 2014

Int J Communication

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Summary This paper focuses on noncoherent detection scheme for multiple‐input multiple‐output two‐way relay channel network with two two‐antennas source nodes and one single‐antenna relay node. An orthogonal differential space–time network coding (ODSTNC) scheme based on relay detection and forward protocol is proposed. The proposed scheme combines space–time coding with network coding, and the differential modulation and detection are used in both multiple access stage and broadcast stage. The multiple‐symbol differential detection is employed at the relay. The maximum likelihood decision and its low‐complexity sphere decoding decision are given. The upper and lower bounds on the average symbol error probability for this system under differential binary phase shift keying (DBPSK) are derived, and a diversity order of 2 is confirmed to be achieved. The simulation results show that the ODSTNC scheme has good performance, and it is available for the applications of far distance signal transmission between two terminals where channel state information is unknown. Copyright © 2014 John Wiley & Sons, Ltd.

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Error Probability Analysis of Bidirectional Relay Systems Using Alamouti Scheme

Cited by 35 publications

References 7 publications

Near optimal power allocation in two‐way relay systems with physical layer network coding

Near optimal power allocation in two‐way relay systems with physical layer network coding

Performance analysis of joint relay selection and transmission schemes in multiple-antenna two-way relay systems

Differential space–time network coding in MIMO two‐way relay channel network

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