Generation and characterization of orthogonal FH sequences for the cognitive network

作     者：GUAN Lei LI Zan SI JiangBo HUANG YangChao 

作者机构：State Key Laboratory of Integrated Services Networks Xidian University 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2015年第58卷第2期

页      面：140-150页

核心收录：

学科分类：11[军事学] 0810[工学-信息与通信工程] 1105[军事学-军队指挥学] 0808[工学-电气工程] 110503[军事学-军事通信学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported in part by the National Natural Science Foundation of China(Grant Nos.61301179,61401323,61401338) the Foundation of National Key Laboratory of Science and Technology on Communications Anti-Jamming the Doctorial Programs Foundation of the Ministry of Education(Grant No.20110203110011) the Key Programs for Natural Science Foundation of Shaanxi Province(Grant No.2012JZ8002) the Fundamental Research Funds for the Central Universities(Grant No.72124338) 

主　　题：cognitive frequency hopping orthogonal frequency hopping sequence frequency hopping network frequency division multiple access throughput 

摘      要：The existing orthogonal frequency hopping(FH) sequence cannot support the high throughput and high spectrum efficient cognitive FH(CFH) network due to its small family size, high computational complexity and short period. To overcome these disadvantages, this paper investigates the generation of the orthogonal FH sequence and analyzes its multiple accessibility performance based on the CFH frequency division multipleaccess(FDMA) network model. By the random mapping and cyclical shift replacement(CSR) scheme, a large family size of orthogonal FH sequence with dynamic frequency slot number is generated. In this case, the external interference could be eliminated by avoiding the interfered frequencies, and blocking mutual interference incurred for the packet by the orthogonal frequencies. Moreover, the theoretical relationships of the throughput and transmission delay with respect to the user number and the packet arrival rate are given, which shows that our proposed orthogonal FH sequence could support high throughput and short packet transmission delay in CFH-FDMA network. The simulation results validate our theoretical analysis of the CFH-FDMA network performance, and show that our proposed sequence outperforms the widely used no hit zone FH sequences in terms of uniformity, randomness, Hamming correlation, complexity and sensitivity, etc.