The opportunities and flexibility in relay networks and orthogonal frequency-division multiple access (OFDMA) make the combination a suitable candidate network and air-interface …
Relaying and orthogonal frequency division multiple access (OFDMA) are the accepted technologies for emerging wireless communications standards. The activities in many …
H Min, S Lee, K Kwak, D Hong - IEEE Transactions on Wireless …, 2009 - ieeexplore.ieee.org
The amplify-and-forward (AF) relaying system considered here consists of a source node with M transmit antennas, and relay and destination nodes with a single antenna each. The …
Relaying and orthogonal frequency division multiple access (OFDMA) are the accepted technologies for emerging wireless communications standards. The activities in many …
L Wang, Y Ji, F Liu, J Li - 2008 International Wireless …, 2008 - ieeexplore.ieee.org
The integration of multihop capabilities in orthogonal frequency-division multiple access (OFDMA) cellular systems through the deployment of relay stations is believed to be one of …
MS Kaiser, KM Ahmed, RA Shah - 2010 IEEE International …, 2010 - ieeexplore.ieee.org
This paper investigates power allocation in OFDM-based cognitive relay networks. Relay- assisted cognitive radio network (RCRN) combines diversity gain with spectral sharing …
The provision of very high data rates in a ubiquitous manner throughout the service area is a great challenge for 4G and beyond-4G wireless networks. Towards that end, the deployment …
In this survey, techniques to enhance energy efficiency (EE) in orthogonal frequency division multiple access (OFDMA) and orthogonal frequency division multiplexing (OFDM) systems …
The rapid development of audio and video applications such as Skype and YouTube increases people's demands for ubiquitous high-data-rate coverage. Orthogonal Frequency …