NDLI: Pilot allocation approaches for channel estimation in MIMO relay networks

Content Provider	IET Digital Library
Author	Kasgari, Abbas Akbarpour Ardebilipour, Mehrdad
Abstract	Distributed-compressed sensing (DCS)-based channel estimation of multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing for relay communication is considered in this study. Specifically, the pilot allocation is addressed to optimise the channel estimation performance. All the existing works on DCS-based channel estimation pilot placement discussed on the mean square error (MSE) of the estimation probabilistically based on the mutual coherence. On the contrary, the authors try to address the MSE of the estimation directly and optimise the MSE directly and design a pilot pattern to optimise the performance of the estimation. By taking into account the optimisation approach, two combinatorial stochastic algorithms have been presented. These two algorithms utilise cross entropy approach in sequential and parallel form. Simulation results represent that the DCS-based MIMO relay channel estimation using optimised pilot placements will increase the performance from 3 to 12 dB as compared with the conventional least squares (LS) method. Furthermore, parallelism has demonstrated the performance gain. Moreover, the DCS-based MIMO relay channel estimation shows 35 % improvement in spectrum efficiency under the same bit error rate performance over the traditional LS-based channel estimation approach, respectively.
Starting Page	2030
Ending Page	2037
Page Count	8
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 16, Oct (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0994
Journal	IET Communications
Publisher Date	2018-06-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bit Error Rate Performance Channel Estimation Channel Estimation Performance Optimisation Combinatorial Mathematics Combinatorial Stochastic Algorithm Communication Channel Equalisation And Identification Cross Entropy Approach DCS-based Channel Estimation Pilot Placement DCS-based MIMO Relay Channel Estimation Distributed-compressed Sensing-based Channel Estimation Entropy Error Statistics Interpolation And Function Approximation Mean Square Error Method MIMO Communication MIMO Relay Network Modulation And Coding Method MSE Multiple-input Multiple-output Orthogonal Frequency Division Multiplexing Mutual Coherence Numerical Analysis OFDM Modulation Optimisation Optimisation Technique Pilot Allocation Approach Pilot Pattern Radio Link And Equipment Relay Communication Relay Network Spectrum Efficiency Statistics Stochastic Linearised SCUC Telecommunication
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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