Network-coded cooperation algorithm for multiple source - multiple relay topologies in cellular networks

Stef, Mihai P.; Polgar, Zsolt Alfred; Bota, Vasile; Botos, Anghel

doi:10.1109/iccomm.2010.5509121

Cited by 3 publications

(1 citation statement)

References 5 publications

(4 reference statements)

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“…In [16] and [17], interference alignment and block diagonalization methods were respectively utilized by the cooperating RSs to decompose the relay channel into several parallel channels to improve multiplexing gain. In [18], relay cooperation was achieved through the implementation of network coding techniques derived from XOR-coding or Reed Solomon coding. The outage probability and the block error rate (BLER) performance were then evaluated for a linear topology.…”

Section: R Elay Transmission Is a Promising Technology In Longmentioning

confidence: 99%

Spectral-Energy Efficiency Tradeoff in Relay-Aided Cellular Networks

Wang

Thompson

2013

IEEE Trans. Wireless Commun.

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Abstract-A relay cooperation scheme is proposed for the downlink of multicell multiple-input-multiple-output cellular networks. The relay stations (RSs) will cooperatively transmit the signal replicas of all the user equipments obtained during the broadcast phase. We consider different RS decoding strategies during the broadcast phase and joint relay transmission with different degrees of channel state information (CSI) sharing during the relay phase. We also propose the partial semiorthogonal user selection (PSUS) method designed specifically for relay cooperation. The spectral and energy efficiencies are then evaluated for the relay cooperation scheme. Its cooperative costs for different cooperation levels are also investigated. Simulation results indicate that joint RS decoding outperforms independent RS decoding but a cooperative link with a bit rate of an order of magnitude greater than that achievable by the relay network is required. Compared to the competing user selection methods that require global CSI, the proposed PSUS method utilized for relay phase joint transmission operates at less than half of the cooperative cost while introduces only a slight degradation in system performance.

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Section: R Elay Transmission Is a Promising Technology In Longmentioning

confidence: 99%

Spectral-Energy Efficiency Tradeoff in Relay-Aided Cellular Networks

Wang

Thompson

2013

IEEE Trans. Wireless Commun.

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Cooperative and Distributed Systems

Sýkora

Bota

Javornik

2012

Signals and Communication Technology

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A new strategy in asymmetric two-user two-relay wireless networks with network coding and hierarchical modulation

Guo

Hao

2012

2012 World Congress on Information and Communication Technologies

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In this paper, a new strategy was proposed that combining network coding with hierarchical modulation to solve the problem of asymmetry in two-user two-relay wireless networks. Hierarchical modulation was used to improve the performance of the low-priority stream and network coding was aimed at strengthening the reliability of the high-priority stream. Bit error rate (BER) was obtained to prove the correctness of the simulations. Compared with the conventional network coding scheme, it was obvious that the new strategy performed much better under additive white Gaussian noise (AWGN) channel. However under Rayleigh channel, its advantages played a dominant role in relatively lower signal-to-noise ratio (SNR) while its disadvantages leaded in higher SNR. In addition, simulations were performed to find a proper priority parameter of hierarchical modulation in accordance with the circumstances of the channels.Hierarchical modulation(HM), network coding(NC), asymmetric, two-user two-relay wireless network

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Network-coded cooperation algorithm for multiple source - multiple relay topologies in cellular networks

Cited by 3 publications

References 5 publications

Spectral-Energy Efficiency Tradeoff in Relay-Aided Cellular Networks

Spectral-Energy Efficiency Tradeoff in Relay-Aided Cellular Networks

Cooperative and Distributed Systems

A new strategy in asymmetric two-user two-relay wireless networks with network coding and hierarchical modulation

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