تصفح حسب الموضوع "cooperative communications"
السجلات المعروضة 1 -- 5 من 5
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A survey on uplink resource allocation in OFDMA wireless networks
( IEEE , 2012 , Article Review)OFDMA has been selected as the multiple access scheme for state-of-the-art wireless communication systems. Efficient resource allocation in OFDMA wireless networks is essential in order to meet the quality of service ... -
Distributed turbo coding using log-likelihood thresholding for cooperative communications
( IEEE , 2009 , Article)In cooperative communications, error propagation at relays reduces the diversity order of the system. To combat that effect, we present a novel technique to control error propagation at the relays, which is presented in ... -
Exploiting sparsity of relay-assisted cognitive radio networks
( IEEE , 2015 , Conference)We propose a novel protocol for secondary users based on compressive sensing principles. The secondary user assigned to one of the primary frequency bands is aided by a set of nearby secondary users, which we refer to as ... -
On the coexistence of a primary user with an energy harvesting secondary user: A case of cognitive cooperation
( John Wiley and Sons Ltd , 2016 , Article)In this paper, we consider a cognitive scenario where an energy harvesting secondary user shares the spectrum with a primary user. The secondary source helps the primary source in delivering its undelivered packets during ... -
Relay-Assisted Primary and Secondary Transmissions in Cognitive Radio Networks
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)We assume a set of cognitive relay nodes that assists both primary and secondary transmissions in a time-slotted cognitive radio networks. To regulate the channel access of the various nodes in the network, we propose an ...
