Paper Info
Title
Achievable Spatial Throughput in Multi-Antenna Cognitive Underlay Networks with Multi-Hop Relaying
Abstract
In this article, we quantify the achievable spatial throughput of a multi-antenna Poisson cognitive radio network (CRN) collocated with a Poisson multi-antenna primary network. CR users employ Slotted-ALOHA medium access control. The success probability (SP) of a primary link is quantified in the presence of the secondary and primary interferers. It is demonstrated that two fold gains are experienced by employing multiple antennas at primary, i.e., (i) the fixed high desired SP threshold is met; (ii) CRs can also be accommodated without QoS deterioration. Further in this paper, the maximum permissible medium access probability (MAP) for CRN is derived from the link SP and primary users QoS constraint. The impact of the number of antennas and modulation employed at the primary on the permissible MAP of the CRN is also explored. Assuming that CR users employ multi-hop communication, QoS aware relaying with a radian sector forwarding area is studied. The average forward progress (AFP) and isolation probability for a CR user with QoS based connectivity is characterized under the permissible MAP. The spatial throughput for the CRN is quantified by the analysis of the AFP and the permissible MAP. It is shown that there exists an optimal MAP which maximizes the spatial throughput of the CRN. This optimal MAP is coupled with the permissible MAP, density of users, number of antennas and modulation schemes employed in both primary and secondary networks. Lastly, a few important design questions are investigated for multi-hop MIMO underlay CRNs.
Year
DOI
Venue
2013
10.1109/JSAC.2013.130817
IEEE Journal on Selected Areas in Communications
Keywords
Field
DocType
MIMO communication,access protocols,antenna arrays,cognitive radio,modulation,probability,quality of service,relay networks (telecommunication),stochastic processes,AFP,CR user,CRN,MAP,Poisson multiantenna primary network,SP,isolation probability,medium access probability,modulation scheme,multiantenna Poisson cognitive radio network,multiantenna cognitive underlay networks,multihop MIMO,multihop communication,multihop relaying,primary user QoS constraint,secondary networks,slotted-ALOHA medium access control,success probability,Cognitive radio,Poisson point process,ad-hoc,isolation,multiple-input multiple-output,stochastic geometry,underlay
Computer science,Computer network,MIMO,Stochastic process,Quality of service,Modulation,Underlay,Throughput,Poisson distribution,Cognitive radio
Journal
Volume
Issue
ISSN
31
8
0733-8716
Citations 
PageRank 
References 
13
0.72
23
Authors
4
Name
Order
Citations
PageRank
Syed Ali Raza Zaidi1454.77
Mounir Ghogho21072113.80
Desmond C. McLernon316115.18
Swami, A.45105566.62