Cognitive cooperative MAC with one primary and two secondary users: Achievable rates and optimal power control

Name: Cognitive cooperative MAC with one primary and two secondary users: Achievable rates and optimal power control
Author: Edemen, Çağatay, Kaya, O.

İsim	Cognitive cooperative MAC with one primary and two secondary users: Achievable rates and optimal power control
Yazar	Edemen, Çağatay, Kaya, O.
Basım Tarihi:	2014-11
Basım Yeri	- IEEE
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1089-7798
Kayıt Numarası	512da6fa-f2b6-4cf4-ab87-89d0b4363fcb
Lokasyon	Electrical & Electronics Engineering
Tarih	2014-11
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	We consider a three-user fading cognitive cooperative multiple access channel (MAC) with one primary and two secondary transmitters. We propose two encoding/decoding strategies with varying levels of cooperation, based on block Markov superposition encoding and backward decoding. The first is an overlay model, where the secondary users (SUs) aid the transmission of the primary user (PU) by causally decoding the PU message and forwarding it while also cooperating among each other. The second is an underlay model, where the SUs cooperate by decoding and forwarding each other's messages while treating the signal received from the PU as noise. In either case, the PU is guaranteed to operate at its maximum achievable single user rate. We characterize the achievable SU rate region for both models and maximize this region as a function of the transmit powers. The simulation results show that the SU rate region can be significantly enlarged, particularly using the overlay model.
DOI	10.1109/LCOMM.2014.2360519
Cilt	18

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Cognitive cooperative MAC with one primary and two secondary users: Achievable rates and optimal power control

Yazar Edemen, Çağatay, Kaya, O.

Basım Tarihi 2014-11

Basım Yeri - IEEE

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1089-7798

Kayıt Numarası 512da6fa-f2b6-4cf4-ab87-89d0b4363fcb

Lokasyon Electrical & Electronics Engineering

Tarih 2014-11

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin We consider a three-user fading cognitive cooperative multiple access channel (MAC) with one primary and two secondary transmitters. We propose two encoding/decoding strategies with varying levels of cooperation, based on block Markov superposition encoding and backward decoding. The first is an overlay model, where the secondary users (SUs) aid the transmission of the primary user (PU) by causally decoding the PU message and forwarding it while also cooperating among each other. The second is an underlay model, where the SUs cooperate by decoding and forwarding each other's messages while treating the signal received from the PU as noise. In either case, the PU is guaranteed to operate at its maximum achievable single user rate. We characterize the achievable SU rate region for both models and maximize this region as a function of the transmit powers. The simulation results show that the SU rate region can be significantly enlarged, particularly using the overlay model.

DOI 10.1109/LCOMM.2014.2360519

Cilt 18