Wireless Communications and Mobile Computing / 2017 / Article / Fig 9

Research Article

Combined Sector and Channel Hopping Schemes for Efficient Rendezvous in Directional Antenna Cognitive Radio Networks

Figure 9

Rendezvous between SUs and according to the combined PES-SCH scheme. and . Number of best-quality channels per each sector .
(a) The combined PES-SCH sequence construction for the sender
(b) The combined PES-SCH sequence construction for the receiver
(c) Synchronous sector and channel rendezvous between and
(d) Asynchronous sector and channel rendezvous between the SUs when starts its hopping earlier than by 4 slots

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