计算机科学 ›› 2014, Vol. 41 ›› Issue (8): 169-171.doi: 10.11896/j.issn.1002-137X.2014.08.037
武俊生,李雪梅
WU Jun-sheng and LI Xue-mei
摘要： 为了减少频谱感知时间所导致的切换时延,以提高认知用户频谱切换性能,提出了一种基于联合考虑信道空闲和切换概率的认知网络频谱切换方法。在进行信道感知排序时,不仅考虑切换发生时的信道空闲概率,还考虑使用该信道时不再发生切换的概率。通过仿真实验测试了该方法的性能。结果表明,相对于其它频谱切换方法,该方法可大幅度减少切换次数,为用户提供更加可靠的服务。
| [1] Akyildiz F,Vuran M C,Mohanty S．A survey on spectrum mana-gement in cognitive radio networks [J]．IEEE Communications Magazine,2008,6(4):40-48 [2] 朱星宇,周怀北,黄俊园．认知无线网络基于信道感知排序的频谱切换 [J].电信科学,2013,2(4):51-55 [3] Sardellitti S,Giona M,Barbarossa S．Fast distributed averageconsensus algorithms based on advection-diffusion processes [J]．IEEE Trans．Signal Process,2010,58(2):826-842 [4] Zheng H,Peng C．Collaboration and fairness in opportunisticspectrum access[C]∥Proceedings of the IEEE International Conference on Communications (ICC)．Seoul,Korea,2005:3132-3136 [5] Buddhikot M M,Kolodzy P,Miller S,et al．DIMSUMNet:Newdirections in wireless networking using coordinated dynamic spectrum access[C]∥Proceedings of the World of Wireless Mobile and Multimedia Networks．Taormina,Italy,2005:78-85 [6] Weiss T A,Jondral F K．Spectrum pooling:An innovative stra-tegy for the enhancement of spectrum efficiency [J]．IEEE Communications Magazine,2004,42(3):8-14 [7] Mark F,Mario C,Pierre H．Efficient MAC in cognitive radiosystems:A game theoretic approach [J]．IEEE Transactions on Wireless Communications,2009,8(4):1984-1995 [8] Bae J,Beigman E,Berry R,et al．Sequential bandwidth and powerauction for distributed spectrum sharing [J]．IEEE Selected Areas in Communications,2008,26(7):1193-1203 [9] Behzad A,Rubin I．Multiple access protocol for power controlled wireless access nets [J]．IEEE Transactions on Mobile Computing,2004,3(4):307-316 [10] Qiao X,Tan Z,Ai B,et al．Spectrum Handoff for Cognitive Radio Systems Based on Prediction Considering Cross-Layer Optimization [J]．IEICE Transactions on Communications,2010,93(12):3274-3283 [11] Lopes C G,Sayed A H．Diffusion least-mean squares over adaptive networks:Formulation and performance analysis [J]．IEEE Trans．Signal Process,2008,6(7):3122-3136 [12] Zhang W,Mallik R K,Letaief K B．Optimization of cooperative spectrum sensing with energy detection in cognitive radio networks [J]．IEEE Trans on Wireless Communications,2009,8(12):5761-5766 [13] 贾杰,林秋思,陈剑,等.认知无线Mesh网络中联合功率控制与信道分配的拥塞避[J].计算机学报,2013,6(5):915-925 [14] Zhao Z J,Peng Z,Zheng S L,et al．Cognitive radio spectrum allocation using evolutionary algorithms[J]．IEEE Transactions on Wireless Communications,2009,8(9):4421-4425 [15] 吴琼,鲜永菊,徐昌彪,等.认知无线电中基于多属性判决的目标切换信道选择[J].计算机工程与应用,2011,7(27):158-160 [16] 李姣军,陈安志,苏理云,等.WPDM-CDMA系统中的LS与MMSE信道估计算法仿真分析[J].重庆理工大学学报:自然科学版,2013,27(8):66-69 |
| No related articles found! |
|
||
首页