Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/17620
Title: Multiuser MIMO Wireless Communications: Optimal and Efficient Schemes For Rate Maximization and Power Minimization
Authors: HO WING LONG WINSTON
Keywords: multiuser, MIMO, wireless, communications, space-time, OFDM
Issue Date: 16-Dec-2008
Source: HO WING LONG WINSTON (2008-12-16). Multiuser MIMO Wireless Communications: Optimal and Efficient Schemes For Rate Maximization and Power Minimization. ScholarBank@NUS Repository.
Abstract: In this thesis a new matrix decomposition and associated transceiver schemes are proposed for the multiple-input multiple-output (MIMO) broadcast channel (BC). The schemes maximize the sum rate via dirty paper coding (DPC) and decompose each user's MIMO channel into parallel subchannels with identical SNRs. Both optimal and efficient schemes are proposed. Following that, the problem of minimizing the sum power given users' rate requirements is considered. The optimal interference-balancing (IB) methods require high complexity. This thesis considers zero-forcing (ZF)-DPC, which permits a closed form solution. Efficient solutions are provided to find the encoding order and subchannel selection. Next, for MIMO orthogonal frequency division multiplexing (MIMO-OFDM) systems, an efficient solution to minimize the sum power given users' rate requirements is proposed. A Lagrangian dual decomposition is used to lower the complexity. Although frequency-flat fading may have an adverse effect on decomposition-based techniques, a concept termed dual proportional fairness handles all fading scenarios seamlessly.
URI: http://scholarbank.nus.edu.sg/handle/10635/17620
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Winston Ho Thesis Final.pdf1.14 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

329
checked on Dec 11, 2017

Download(s)

335
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.