NDLI: Vector orthogonal frequency division multiplexing system over fast fading channels

Content Provider	IET Digital Library
Author	Zhou, Wen Fan, Lisheng Chen, Hongbin
Abstract	The performance of the vector orthogonal frequency division multiplexing (V-OFDM) system over fast fading channels is investigated. The channel is time varying within one V-OFDM data-block period, which causes the inter-carrier interference (ICI). With the help of an equivalent V-OFDM system model and an auxiliary transform matrix, a novel mathematical expression for the received signal with the ICI signal is derived, which clearly expresses how the signal of a target vector block (VB) is interfered by other VBs. The ICI signal is analysed and two theorems about its property are proposed. The first theorem presents the expression of the power of the ICI signal, showing that the ICI signal power increases with the VB number. The other one indicates that ICI signals at different subcarriers are not correlated. With the two theorems, a novel detection method utilising the correlation of the ICI signal is therefore proposed. Numerical results verify the validity of the derived theorems and simulation results demonstrate that the proposed minimum mean square error (MMSE) detection can suppress the ICI effect and it is superior to the conventional MMSE detection in terms of both detection mean square error and bit error rate performance.
Starting Page	2322
Ending Page	2335
Page Count	14
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 13, Sep (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.1064
Journal	IET Communications
Publisher Date	2014-07-23
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Auxiliary Transform Matrix Bit Error Rate Performance Correlation Method Detection Method Electromagnetic Compatibility Fading Channel Fast Fading Channel ICI Signal Correlation ICI Signal Power Intercarrier Interference Interference Interpolation And Function Approximation Least Mean Squares Method Mathematical Expression Minimum Mean Square Error Detection MMSE Detection Modulation And Coding Method Numerical Analysis OFDM Modulation Radio Link And Equipment Received Signal Signal Detection Time Varying V-OFDM Data-block Period V-OFDM System Vector Vector Block Vector Orthogonal Frequency Division Multiplexing System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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