Performance of Cognitive Hybrid Automatic Repeat reQuest:
Go-Back-N
Performance of Cognitive Hybrid Automatic Repeat reQuest:
Go-Back-N
In this paper, we propose a cognitive Go-Back-N Hybrid Automatic Repeat reQuest (CGBN-HARQ) scheme for a cognitive radio (CR) system to opportunistically transmit data over a primary radio (PR) channel. We model the activity of PR users (PRUs) occupying the PR channel as a Markov chain with two states: 'ON' and 'OFF'. In order to use the PR channel, the CR system first senses the availability/unavailability of the PR channel. Once it finds that the PR channel is free, the CR system transmits data packets over the PR channel's spectrum, whilst relying on the principles of GBN-HARQ. In this paper, we investigate both the throughput and delay of CGBN-HARQ, with a special emphasis on the impact of various system parameters involved in the scenarios of both perfect and imperfect spectrum sensing. Our studies demonstrate that the activity of PRUs, the transmission reliability of the CR system as well as the number of packets transmitted per time-slot may have a substantial impact on both the throughput and the delay of the CR system
Rehman, Ateeq
e5f10d6d-7fc7-45f2-a731-ad97c94ef3ee
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Rehman, Ateeq
e5f10d6d-7fc7-45f2-a731-ad97c94ef3ee
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Rehman, Ateeq, Yang, Lieliang and Hanzo, Lajos
(2016)
Performance of Cognitive Hybrid Automatic Repeat reQuest:
Go-Back-N.
2016 IEEE 83rd IEEE Vehicular Technology Conference (VTC-spring 2016), Nanjing, China.
5 pp
.
(doi:10.1109/VTCSpring.2016.7504417).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this paper, we propose a cognitive Go-Back-N Hybrid Automatic Repeat reQuest (CGBN-HARQ) scheme for a cognitive radio (CR) system to opportunistically transmit data over a primary radio (PR) channel. We model the activity of PR users (PRUs) occupying the PR channel as a Markov chain with two states: 'ON' and 'OFF'. In order to use the PR channel, the CR system first senses the availability/unavailability of the PR channel. Once it finds that the PR channel is free, the CR system transmits data packets over the PR channel's spectrum, whilst relying on the principles of GBN-HARQ. In this paper, we investigate both the throughput and delay of CGBN-HARQ, with a special emphasis on the impact of various system parameters involved in the scenarios of both perfect and imperfect spectrum sensing. Our studies demonstrate that the activity of PRUs, the transmission reliability of the CR system as well as the number of packets transmitted per time-slot may have a substantial impact on both the throughput and the delay of the CR system
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Accepted/In Press date: 10 January 2016
e-pub ahead of print date: May 2016
Venue - Dates:
2016 IEEE 83rd IEEE Vehicular Technology Conference (VTC-spring 2016), Nanjing, China, 2016-01-10
Organisations:
Comms, Signal Processing & Control
Identifiers
Local EPrints ID: 398610
URI: http://eprints.soton.ac.uk/id/eprint/398610
PURE UUID: 16114200-05f0-4218-8c50-9fb3ccfe537a
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Date deposited: 29 Jul 2016 11:07
Last modified: 18 Mar 2024 02:49
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Author:
Ateeq Rehman
Author:
Lieliang Yang
Author:
Lajos Hanzo
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