Show simple item record

AuthorEl Shafie, Ahmed
AuthorKhattab, Tamer
Available date2022-11-01T09:01:33Z
Publication Date2014
Publication NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
ResourceScopus
Resource2-s2.0-84944313506
URIhttp://dx.doi.org/10.1109/PIMRC.2014.7136317
URIhttp://hdl.handle.net/10576/35708
AbstractIn this paper, we investigate a cognitive scenario with one secondary user and one primary user. Users are assumed to be buffered terminals. Each user has certain arrival rate with certain packet size. We propose a scheme where the cognitive radio user (secondary user) may combine some of the arrived packets into a single larger packet or split each of them into smaller packets to increase its maximum mean stable arrival rate. We consider sensing errors and study two channel models; namely, collision channel model, where concurrent transmissions cause definite packets loss, and multi-packet reception channel model, where packet could survive from interference if the received signal-to-interference-and-noise-ratio is greater than a certain threshold. When the channel is a collision channel, the objective function of the optimization problem which characterizes the stability region is shown to be log-concave. The optimization problem can be easily converted to a concave program that can be solved efficiently and reliably. When the channel is a multi-packet channel model, the problem is a simple grid search over the divisors and multIPles of the original packets size. The results show the gains of the proposed technique and demonstrate its ability to alleviate the sensing errors' negative impact on the secondary stable throughput. 2014 IEEE.
Languageen
PublisherInstitute of Electrical and Electronics Engineers Inc.
SubjectCognitive radio
collision
multi-packet reception
packets size
queue stability
sensing errors mitigation
stable throughput
TitleThroughput maximization via adjusting packet size of a buffered cognitive radio user
TypeConference Paper
Pagination1024-1029
Volume Number2014-June
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record