Description: CDMA移动通信系统中一种速率功率联合控制方法-CDMA mobile communication system in a joint rate-power control method Platform: |
Size: 125952 |
Author:胡灿 |
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Description: 采用多天线的认知无线电系统相对于单天线认知无线电系统，既有传统的资源（频域，时域，码域），又有空域资源。本文研究基于博弈论的有限反馈认知MIMO系统的资源分配，涉及发射功率、空域（采用波束成形）和反馈速率等资源的分配。利用有限的反馈信道反馈量化的信道状态信息(CSI)，基于量化CSI，本文主要研究联合功率分配与波束成形优化、次用户（认知用户或非授权用户）反馈速率控制、联合功率分配与反馈速率控制等相关资源分配问题。-Multi-antenna cognitive radio system with respect to a single antenna cognitive radio systems, both traditional resource (frequency domain, time domain, code domain), there airspace resources. In this paper, a limited resource allocation game theory of cognitive MIMO system based on feedback, involving the launch distribution power, airspace (using beam-forming) and feedback rate and other resources. With limited feedback channel feedback quantized channel state information (CSI), based on quantified CSI, this paper studies the joint power allocation and beamforming optimization, secondary users (cognitive user or unauthorized user) feedback rate control, joint power allocation and feedback rate control and other issues related to resource allocation. Platform: |
Size: 52224 |
Author:sunjing |
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Description: 本文研究了有限反馈下基于博弈论的联合功率分配与反馈速率控制优化问题。通过建立新的博弈模型，证明了其纳什均衡的存在性。同时，根据功率与反馈速率的关系，提出了一种迭代算法，可快速收敛到博弈不动点。仿真结果表明，联合优化算法的性能优于单单考虑反馈速率的算法。-In this paper, under the limited feedback joint power allocation based on game theory and feedback rate control optimization problems. Through the establishment of a new game model proved its existence of Nash equilibrium. Meanwhile, according to the relationship between power and the feedback rate proposed an iterative algorithm can quickly converge to a fixed point game. Simulation results show that the performance of joint optimization algorithm is superior to just consider the feedback rate of the algorithm. Platform: |
Size: 51200 |
Author:sunjing |
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Description: Non-orthogonal multiple access (NOMA) is a promising air-interface technology for its ability to support massive wireless mobile terminals. In this paper, the outage performance for
uplink NOMA systems employing the dynamic ordered successive
interference cancellation receiver is analyzed under the independent but not identically distributed (i.ni.d.) fading environment.
We theoretically reveal the general approach to derive the closedform outage probability expression for an arbitrary number of
serving users. Under the i.ni.d. fading environment, the probability
for each possible decoding order is derived respectively based on
the observation of the time-varying received power strength for
each user. Furthermore, encountering the challenge of solving the
multidimensional integration, a recursive method is proposed to
deal with the conditional outage probabilities under a certain
decoding order as a joint probability problem with the linear
constraints of the decoding order and the required data rate.
Finally, we derive the closed-form outage probability expressions.
The simulations are performed to validate the accuracy of the
theoretical results and reveal the superiority of the dynamic mode
over the fixed one. Platform: |
Size: 1434011 |
Author:dipfr@yahoo.fr |
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