000 03342nas a2200421 a 4500
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008 090115s2008 th uu|m rtt 0| a1eng d
035 _a.b12044593
099 9 _aAIT Thesis no.TC-08-02
100 1 _aMehmood, Mirza Tayyab
245 1 3 _aAn adaptive decentralized congestion control algorithm for multi-link mimo interference system with the BER constraint
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2008
300 _a37 leaves :
_bill.
490 1 _aThesis ;
_vno. TC-08-02
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Masters of Engineering in Telecommunications, School of Engineering and Technology
502 _aThesis (M.Eng.) - Asian Institute of Technology, 2008
520 _aWe design an adaptive decentralized congestion control algorithm for multi-link multiple-input multiple-output (MIMO) interference systems. In a multi-link MIMO interference system, each link is trying to maximize its own mutual information by choosing appropriate transmit powers. The scenario can be mapped to a multi-player game in which a player is a link and the utility function is the mutual information of the link. To solve this game, we apply a known decentralized link adjustment algorithm based on the gradient method. Using the power allocation obtained from this algorithm, we propose a decentralized congestion control algorithm that adaptively decides whether or not to support the traffic on each link, and chooses an appropriate modulation scheme for the link. Each link decision depends on the type of traffic (class I or class II) and the quality-of-service (QoS) requirements. In particular, a link decision is based on a metric that is a function of the bit rate and the bit error rate. When some links do not satisfy the QoS requirements, the link with the minimum metric kills itself, i.e., decides not to support traffic. Using MATLAB, we simu»late our algorithm and analyze its behaviors under different system conditions. In addition, we demonstrate the advantages of our algorithm through comparisons with the cases with»out congestion control.
650 0 _aGame theory
_xSimulation methods
650 0 _aMIMO systems
650 0 _aWireless communication systems
700 0 _aPoompat Saengudomlert,
_eChairperson
700 1 _aZeghlache, Djamal,
_eExamination committee
700 1 _aRajatheva, R.M.A.P,
_eExamination Committee
700 0 _aTeerapat Sanguankotchakorn,
_eExamination Committee
710 2 _aHigher Education Commission (HEC), Pakistan,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. TC-08-02
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B04047
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