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Interference alignment-and-cancellation scheme based on Alamouti code for the three-user multi-input-multi-output interference channel

Title
Interference alignment-and-cancellation scheme based on Alamouti code for the three-user multi-input-multi-output interference channel
Author
신동준
Keywords
interference suppression; MIMO communication; channel coding; diversity reception; receiving antennas; antenna arrays; interference alignment-and-cancellation scheme; Alamouti code; three-user multiinput-multioutput interference channel; degrees of freedom; DoF; network throughput; reliability; IC scheme; K-user MIMO interference channel; diversity order; receive antennas; IAC scheme; partial CSIT; symbol-by-symbol decoding; channel-state-information at the transmitters
Issue Date
2015-07
Publisher
INST ENGINEERING TECHNOLOGY-IET
Citation
IET COMMUNICATIONS, v. 9, NO 10, Page. 1278-1288
Abstract
An interference alignment (IA) scheme for interference channels was recently proposed to achieve the maximum degrees of freedom (DoF). Although most studies of IA focus on network throughput, that is, DoF, reliability in terms of diversity order is also an important performance measure. In this study, interference cancellation (IC) scheme based on Alamouti code in the multi-access scenario is applied to the K-user, multi-input-multi-output (MIMO) interference channel. This IC scheme gives the benefit of diversity order and requires no channel-state-information at the transmitters (CSIT). However, it requires more receive antennas than the IA scheme to achieve the same DoF. In order to reduce the number of receive antennas, especially for the three-user MIMO interference channel, an IA-and-cancellation (IAC) scheme based on Alamouti code is proposed. It keeps the same DoF as the IC scheme, but requires partial CSIT. It is analytically shown that the IC and IAC schemes enable symbol-by-symbol decoding and achieve diversity order of two, while the conventional IA scheme achieves diversity order of one.
URI
http://ieeexplore.ieee.org/document/7137609/?arnumber=7137609http://hdl.handle.net/20.500.11754/26448
ISSN
1751-8628; 1751-8636
DOI
10.1049/iet-com.2014.1084
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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