عرض بسيط للتسجيلة

المؤلفShafie, Ahmed El
المؤلفSultan, Ahmed
المؤلفKhattab, Tamer
المؤلفPoor, H. Vincent
تاريخ الإتاحة2022-11-01T09:01:31Z
تاريخ النشر2015
اسم المنشور2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
المصدرScopus
المصدر2-s2.0-84938703578
معرّف المصادر الموحدhttp://dx.doi.org/10.1109/WCNC.2015.7127587
معرّف المصادر الموحدhttp://hdl.handle.net/10576/35687
الملخصThe use of N cognitive relays to assist primary and secondary transmissions in a time-slotted cognitive setting with one primary user (PU) and one secondary user (SU) is investigated. An overlapped spectrum sensing strategy is proposed for channel sensing, where the SU senses the channel for ? seconds from the beginning of the time slot and the cognitive relays sense the channel for 2? seconds from the beginning of the time slot, thus providing the SU with an intrinsic priority over the relays. The relays sense the channel over the interval [0, ?] to detect primary activity and over the interval [?, 2?] to detect secondary activity. The relays help both the PU and SU to deliver their undelivered packets and transmit when both are idle. An optimization-based formulation with quality of service constraints involving queueing delay is studied. The results show the benefits of relaying and its ability to enhance both primary and secondary performance, especially in the case of no direct link between the PU and the SU transmitters and their respective receivers. Three packet decoding strategies at the relays are also investigated and their performance is compared. 2015 IEEE.
اللغةen
الناشرInstitute of Electrical and Electronics Engineers Inc.
الموضوعComputer applications
Mobile telecommunication systems
Channel sensing
Cognitive relays
Decoding strategy
Overlapped spectra
Quality of Service constraints
Queueing delays
Secondary networks
Secondary user
Quality of service
العنوانOn the design of relay-assisted primary-secondary networks
النوعConference Paper
الصفحات890-895
dc.accessType Abstract Only


الملفات في هذه التسجيلة

الملفاتالحجمالصيغةالعرض

لا توجد ملفات لها صلة بهذه التسجيلة.

هذه التسجيلة تظهر في المجموعات التالية

عرض بسيط للتسجيلة