论文信息 - Power Allocation for Multiband Coded OFDM Systems with Limited Feedback

Power Allocation for Multiband Coded OFDM Systems with Limited Feedback

In this paper, we study the power allocation for multiband coded OFDM systems. With limited feedback, we propose an effective power allocation method across OFDM bands to maximize the throughput and achieve the quality of service target. To facilitate the proposed method, two optimization algorithms based on greedy and dynamic programming principles are discussed. The trade-off between performance and complexity is provided. Simulation results show that the proposed power allocation mechanism allows a signal to noise ratio gain of 2 dB at a goodput of 2.5 bit per second per Hz over the multiband OFDM systems with equal power allocation.

Jinho Choi | Seungwon Choi | Huan Xuan Nguyen | Duc To

[1] D. A. Bell,et al. Information Theory and Reliable Communication , 1969 .

[2] Arne Svensson,et al. Multi-Rate Convolutional Codes , 1998 .

[3] Donald C. Cox,et al. Efficient power allocation for coded OFDM systems , 2009, IEEE Transactions on Communications.

[4] Inkyu Lee,et al. Adaptive Bit-Interleaved Coded OFDM With Reduced Feedback Information , 2007, IEEE Transactions on Communications.

[5] John M. Cioffi,et al. Adaptive modulation and coding (AMC) for bit-interleaved coded OFDM (BIC-OFDM) , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[6] Santosh Nagaraj. Symbol-level adaptive modulation for coded OFDM on block fading channels , 2009, IEEE Transactions on Communications.

[7] Lutz H.-J. Lampe,et al. Power allocation for coded OFDM via linear programming , 2009, IEEE Communications Letters.

[8] Awi Federgruen,et al. The Greedy Procedure for Resource Allocation Problems: Necessary and Sufficient Conditions for Optimality , 1986, Oper. Res..

[9] Theodore Antonakopoulos,et al. Bit and Power Allocation in Constrained Multicarrier Systems: The Single-User Case , 2008, EURASIP J. Adv. Signal Process..