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Investigation on Power Control Technology of MANET Based on Opportunistic Spectrum Access

Author: LiangBo
Tutor: DongYuNing
School: Nanjing University of Posts and Telecommunications
Course: Signal and Information Processing
Keywords: IWFA QoS Power Control OSA MANET Cognitive radio Nonlinear complementarity problem Punish price
CLC: TN925
Type: Master's thesis
Year: 2011
Downloads: 19
Quote: 0
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Abstract


MANET based on opportunistic spectrum access involves many aspects , which in MANET based on opportunistic spectrum access , power control algorithm design is currently a hot research topic . This article is based on opportunistic spectrum access the MANET network key technical characteristics of the starting round based on opportunistic spectrum access in MANET main power control algorithm , based opportunistic spectrum access MANET power control algorithm for single- channel case, does not meet the requirements of the actual network , unable to adapt to the multi-channel network scenarios ; while the traditional network of multi-channel power control algorithms can not control the user the superimposed interference to the primary user , can not meet the primary user interference temperature constraint , thus not suited based on opportunistic spectrum access of MANET . Multichannel iterative water-filling algorithm (IWFA) for the classic traditional wireless network based on the lack of opportunistic spectrum access in MANET , the paper focuses on the problem opportunistic spectrum access MANET - based power control in multi-channel conditions , that minimize the transmission power of the user when the QoS constraints meet the temperature of the primary user interference and user itself , the introduction of the price mechanism to control the times the user is superimposed on the primary user interference . The research work includes the following aspects : 1 ) the units interference to the primary user of times a user through the use of punitive price penalty, to reduce the transmission power of the secondary users , to lower secondary users in the Nash equilibrium of superimposed interference to the primary user . Proposed given punishment prices Solving Nash Equilibrium improved multi-channel synchronization , sequence , and asynchronous the IWFA . 2 ) expressed as a nonlinear complementarity problem by Price generate price update algorithm based on gradient projection is proposed to solve the right price factor , so that the Nash equilibrium achieved in the current the price coefficient punishment under secondary users to meet the primary user interference temperature constraints , so as to achieve the purpose of the main guarantee user QoS . 3) the proposed algorithm in different network environments set performance and convergence properties compared by MATLAB simulation , results show that relative to the classic multi-channel IWFA, the algorithm reaches the Nash equilibrium to meet the primary user interference temperature constraints , adaptation of MANET -based opportunistic spectrum access .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications
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