Asynchronous Channel-Hopping Sequences With the Best Maximum-Time-to-Rendezvous and Period for Cognitive-Radio Wireless Networks
Weizhe Zhang, Guu-Chang Yang, Li-Hsin Yang, Wing C. Kwong · IEEE Communications Letters · 2021
A new family of asynchronous channel-hopping (CH) sequences for cognitive-radio wireless networks (CRWNs) is constructed by a novel 2-D method. The new construction applies two different algorithms to create the columns and rows of a base matrix, which is mapped row-by-row to form the 1-D CH sequences. In addition to full degree-of-rendezvous, the new CH sequences have the shortest period and maximum-time-to-rendezvous and allow more flexible choices of period and number of licensed channels than their counterparts. While short period saves memory in small sensors and mobile devices, the new construction is shown to support the largest throughput with the fewest licensed channels (i.e., spectral resources) in practical CRWNs.