| 认知OFDM系统中针对视频业务用户的资源分配方案 |
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| 引用本文： | 张江梅.认知OFDM系统中针对视频业务用户的资源分配方案[J].电视技术,2015,39(11):142-146. |
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| 作者姓名： | 张江梅 |
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| 作者单位： | 河北工程大学 |
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| 基金项目： | 河北省自然科学基金(FN201202046); 河北省高等学校科学技术研究重点项目(ZH2011222) |
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| 摘 要： | 在多用户认知无线电OFDM系统中,针对实时视频业务用户,本文提出一种计算复杂度低的资源分配方案。该方案采用鱼群算法分配子载波,并提出简单功率干扰(Simple Power Interference, SPI)约束功率分配算法。目标是在满足总功率预算并且保证不干扰主用户的前提下,最大化系统的下行系统容量。仿真分析表明,在视频业务用户场景中,本文所提算法能有效提高下行系统速率,性能接近最优且复杂度低。
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| 关 键 词： | CR OFDM 视频业务 子载波、功率分配 |
| 收稿时间： | 2014/11/2 0:00:00 |
| 修稿时间： | 2014/11/28 0:00:00 |
Resource Allocation for Video Streaming Service in Cognitive OFDM System |
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| zhangjiangmei.Resource Allocation for Video Streaming Service in Cognitive OFDM System[J].Tv Engineering,2015,39(11):142-146. |
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| Authors: | zhangjiangmei |
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| Affiliation: | School of Information and Electrical Engineering, Hebei University of Engineering |
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| Abstract: | In multiuser cognitive radio orthogonal frequency division multiplexing (OFDM) system, a resource allocation scheme with low computational complexity is proposed. The scheme takes Artificial Fish Swarm Algorithm(AFSA) to allocate subcarriers and puts forward the Simple Power Interference(SPI) algorithm to allocate power. The target is to maximize the downlink system capacity of the system within the total power budget and do not disturb the primary user. The simulation and analysis shows that the proposed scheme can effectively improve system capacity and its performance is close to the optimal solution and its computational complexity is low. |
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| Keywords: | CR OFDM Video Streaming Service Subcarrier and Power Allocation |
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