Title :
Spectrum sharing between cellular and mobile ad hoc networks: Transmission-capacity tradeoff
Author :
Huang, Kaibin ; Lau, Vincent K N ; Chen, Yan
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
Spectrum sharing between wireless networks improves the usage efficiency of radio spectrums. This paper addresses spectrum sharing between a cellular uplink and a mobile ad hoc networks. These networks use either all uplink frequency subchannels or their disjoint subsets, called spectrum underlay and spectrum overlay, respectively. Given these methods, the capacity tradeoff between the coexisting networks is analyzed in terms of transmission capacity. For a network with Poisson distributed transmitters, this metric is defined as the maximum density of transmitters subject to an outage constraint for a given signal-to-interference ratio (SIR). Using stochastic geometry, the transmission-capacity tradeoff between the coexisting networks is derived, where both spectrum overlay and underlay as well as successive interference cancellation (SIC) are considered. In particular, for small target outage probability, the transmission capacities of the coexisting networks are proved to satisfy a linear equation. Its coefficients depend on the spectrum sharing method and whether SIC is applied. This linear equation shows that spectrum overlay is more efficient than spectrum underlay.
Keywords :
Poisson distribution; ad hoc networks; cellular radio; channel allocation; frequency allocation; interference suppression; radiofrequency interference; set theory; stochastic processes; Poisson distributed transmitter; cellular network; disjoint subsets; linear equation; mobile ad hoc network; radio spectrum usage efficiency; small target outage probability; spectrum sharing method; stochastic geometry; successive interference cancellation; transmission-capacity tradeoff; uplink frequency subchannel; wireless network; Cellular networks; Equations; Frequency; Information geometry; Interference constraints; Mobile ad hoc networks; Radio transmitters; Silicon carbide; Stochastic processes; Wireless networks;
Conference_Titel :
Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, 2009. WiOPT 2009. 7th International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4919-4
Electronic_ISBN :
978-1-4244-4920-0
DOI :
10.1109/WIOPT.2009.5291646