Two-Hop Transmissions in Asynchronous Channel-Hopping Cognitive Radio Wireless Networks with Relays

Due to physical constraints or channel impairments, direct (one-hop) communications among secondary nodes may not be possible in cognitive-radio wireless networks (CRWNs). In this letter, the rendezvous problems of two-hop transmissions using a relay node with buffer of different sizes in channel-hopping (CH) CRWNs are studied. A two-hop rendezvous protocol operating with suitable asynchronous CH ...