NDLI: Achieving upper mutual information bound precoding for V-OFDM with MMSE receiver

Content Provider	IET Digital Library
Author	Han, Weiliang Ge, Jianhua Ouyang, Fengchen Zhang, Chensi Gong, Fengkui
Abstract	Traditional vector orthogonal frequency division multiplexing (V-OFDM) can obtain both multi-path diversity and outage gain by transforming an inter-symbol interference (ISI) channel into multiple ‘ISI-free’ channel vectors. To achieve full multi-path diversity and acquire better outage performance, a low-complexity precoding scheme combined with simple minimum mean square error (MMSE) equalisation for V-OFDM system is proposed in this study. First, the upper mutual information bound of the V-OFDM system is derived with channel state information at transmitter. Based on the upper bound, an optimal precoding scheme for V-OFDM is presented. Meanwhile, the closed-form and asymptotic expressions on outage probability of the proposed scheme are derived. Simulations show that this low-complexity scheme can achieve full multi-path diversity and result in lower outage probability than the traditional V-OFDM scheme. Besides, the proposed scheme in ISI fading channel is capable of approaching the upper bound with <0.1 bits/s/Hz performance gap and improving average channel capacity with 2 bits/s/Hz over the traditional V-OFDM scheme.
Starting Page	198
Ending Page	204
Page Count	7
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 2, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0273
Journal	IET Communications
Publisher Date	2017-01-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asymptotic Expressions Average Channel Capacity Improvement Channel Capacity Channel Coding Channel Estimation Channel State Information Closed-form Expression Code Communication Channel Equalisation And Identification Communication Complexity Diversity Reception Electromagnetic Compatibility Fading Channel Interference Interpolation And Function Approximation Intersymbol Interference ISI Fading Channel Least Mean Squares Method Low-complexity Precoding Minimum Mean Square Error Equalisation MMSE Equalisation MMSE Receiver Multipath Diversity Gain Multiple ISI-free Channel Vector Numerical Analysis OFDM Modulation Optimal Precoding Outage Gain Outage Performance Outage Probability Precoding Probability Radio Link And Equipment Radio Receiver Radio Transmitters Reliability Statistics Telecommunication Network Reliability Transmitter Upper Mutual Information Bound Precoding V-OFDM System Vector Orthogonal Frequency Division Multiplexing
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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