Department of Mathematics
 Search | Help | Login | pdf version | printable version

Math @ Duke





.......................

.......................


Publications [#336729] of Vahid Tarokh

Papers Published

  1. Ku, ML; Chen, Q; Ghassemzadeh, SS; Tarokh, V; Wang, LC, Service coverage for cognitive radio networks with cooperative relays in shadowed hotspot areas, 2011 Ieee Wireless Communications and Networking Conference, Wcnc 2011 (June, 2011), pp. 1759-1764, IEEE, ISBN 9781612842547 [doi]
    (last updated on 2023/06/01)

    Abstract:
    In this paper, we investigate the service coverage for interweaving cognitive radio networks with cooperative relays in shadowed areas within the metropolitan region. We highlight the influence of relays on the primary and secondary systems in severe shadow fading channels. The outage probability is utilized as a comprehensive performance metric to characterize the coverage quality for the cognitive radio system with relays. We show that cooperative spectrum sensing among the secondary transmitter and relays can improve the vacant spectrum detection probability and the false alarm probability, thereby making the additionally introduced interference by relays to be constrained within a tolerable limit. Overall, our analysis unveils that both the spectrum utilization rate and the spatial coverage can be significantly improved through the use of the relays, and there exists the spatial selectivity phenomena for both the primary and secondary systems. © 2011 IEEE.

 

dept@math.duke.edu
ph: 919.660.2800
fax: 919.660.2821

Mathematics Department
Duke University, Box 90320
Durham, NC 27708-0320