9 papers
Joint Optimization of Bit and Power Loading for Multicarrier Systems
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In this letter, a novel low complexity bit and power loading algorithm is formulated for multicarrier communication systems. The proposed algorithm jointly maximizes the throughput…
Constrained Joint Bit and Power Allocation for Multicarrier Systems
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
This paper proposes a novel low complexity joint bit and power suboptimal allocation algorithm for multicarrier systems operating in fading environments. The algorithm jointly maxi…
Optimal Bit and Power Loading for OFDM Systems with Average BER and Total Power Constraints
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In this paper, a novel joint bit and power loading algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments. The algorit…
A Novel Algorithm for Joint Bit and Power Loading for OFDM Systems with Unknown Interference
Ebrahim Bedeer, Mohamed F. Marey, Octavia A. Dobre +2
In this paper, a novel low complexity bit and power loading algorithm is formulated for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments a…
A Novel Algorithm for Rate/Power Allocation in OFDM-based Cognitive Radio Systems with Statistical Interference Constraints
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In this paper, we adopt a multiobjective optimization approach to jointly optimize the rate and power in OFDM-based cognitive radio (CR) systems. We propose a novel algorithm that…
Rate-Interference Tradeoff in OFDM-based Cognitive Radio Networks
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In cognitive radio (CR) networks, secondary users (SUs) are allowed to opportunistically access the primary users (PUs) spectrum to improve the spectrum utilization; however, this…