| Summary: | 碩士 === 國立中興大學 === 通訊工程研究所 === 105 === Channel-hopping (CH) sequences have recently been studied for dynamic multiple-access mobile applications, such as wireless sensor, vehicular ad hoc network and cognitive radio (CR) network. In this thesis, a new family of synchronous-symmetric CH sequences over Galois extension field is constructed. They satisfy the channel-overlap, even-channel-use, and full channel utilization design criteria. Besides designing CH sequences, their operations in two transmission scenarios involving different collision-avoidance mechanisms are also analyzed and compared in terms of rendezvous-success (RS) rate. Our study shows that the new sequences have shorter period and maximum time to rendezvous, thus supporting more frequent rendezvous and higher rate in CR networks.
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