Cooperative diversity relaying techniques in wireless communication networks

Atay, Furuzan

doi:10.22215/etd/2009-06606

Cited by 2 publications

(2 citation statements)

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“…The first principle is that multiple nodes in the network can hear most of the transmissions due to broadcast nature of wireless medium, without the requirement of additional transmission power and bandwidth. The second principle is that the channel fading statistics between different mobile nodes and destination node are independent, and the destination node can listen, store and then, combine signals from different mobile nodes [17]. There are numerous techniques proposed by researchers to describe the node-to-node transmissions and cooperation between nodes.…”

Section: Proposed System Model Of Mldsttc Cooperationmentioning

confidence: 99%

Cooperative multilevel dynamic space–time trellis coding scheme for improved system performance

Aneja¹,

Sharma²

2016

IET Communications

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Section: Proposed System Model Of Mldsttc Cooperationmentioning

confidence: 99%

Cooperative multilevel dynamic space–time trellis coding scheme for improved system performance

Aneja¹,

Sharma²

2016

IET Communications

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“…In doing so, the network coverage is extended, fading effects are alleviated, and the whole network can be rolled out cost-effectively and rapidly [1], [2]. Besides, cooperative relaying has emerged as a promising alternative to alleviate the burden of installing multiple antennas on sizelimited terminals [3].…”

Section: Introductionmentioning

confidence: 99%

Relay Selection and Resource Allocation for SWIPT in Multi-User OFDMA Systems

Gautam

Lagunas

Chatzinotas

et al. 2019

IEEE Trans. Wireless Commun.

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We investigate the resource allocation and relay selection in a two-hop relay-assisted multi-user Orthogonal Frequency Division Multiple Access (OFDMA) network, where the end-nodes support Simultaneous Wireless Information and Power Transfer (SWIPT) employing a Power Splitting (PS) technique. Our goal is to optimize the end-nodes' power splitting ratios as well as the relay, carrier and power assignment so that the sum-rate of the system is maximized subject to harvested energy and transmitted power constraints. Such joint optimization with mixed integer non-linear programming structure is combinatorial in nature. Due to the complexity of this problem, we propose to solve its dual problem which guarantees asymptotic optimality and less execution time compared to a highly-complex exhaustive search approach. Furthermore, we also present a heuristic method to solve this problem with lower computational complexity. Simulation results reveal that the proposed algorithms provide significant performance gains compared to a semi-random resource allocation and relay selection approach and close to the optimal solution when the number of OFDMA sub-carriers is sufficiently large.

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Cooperative diversity relaying techniques in wireless communication networks

Cited by 2 publications

References 73 publications

Cooperative multilevel dynamic space–time trellis coding scheme for improved system performance

Cooperative multilevel dynamic space–time trellis coding scheme for improved system performance

Relay Selection and Resource Allocation for SWIPT in Multi-User OFDMA Systems

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