A Resource Allocation Scheme for Multiuser MIMO/OFDM Systems with Spatial Grouping

NCUIR > College of Electrical Engineering & Computer Science > Department of Electrical Engineering > journal & Dissertation > Item 987654321/52025

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52025

Title:	A Resource Allocation Scheme for Multiuser MIMO/OFDM Systems with Spatial Grouping
Authors:	Lin,CY;Chen,YF
Contributors:	電機工程學系
Keywords:	MULTICARRIER MODULATION;POWER ALLOCATION;OFDM;BIT;SUBCARRIER;ACCESS
Date:	2011
Issue Date:	2012-03-28 10:13:35 (UTC+8)
Publisher:	國立中央大學
Abstract:	A resource allocation scheme for multi-access MIMO-OFDM systems in uplink was developed to improve power and spectrum efficiency in the frequency and the space domains [1]. The scheme requires a multi-user detector in the receiver and assumes identical spatial crosscorrelation across all subcarriers for any pair of spatially separable users. However, the multi-user detection device may not exist in the receiver and the identical spatial crosscorrelation assumption may not be valid in some operational scenarios. The paper develops a scheme to remedy these problems for multi-access MIMO-OFDM systems without using multi-user detection techniques and the assumption. The proposed scheme aims at minimizing the total user transmit power while satisfying the required data rate, the maximum transmit power constraint, and the bit error rate of each user. The simulation results are presented to demonstrate the efficacy of the proposed algorithm.
Relation:	IEICE TRANSACTIONS ON COMMUNICATIONS
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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