Power Allocation for Multiband Coded OFDM Systems with Limited Feedback

Author

To, Duc ; Nguyen, Huan X. ; Choi, Jinho ; Choi, Seungwon

Author_Institution

Coll. of Eng., Swansea Univ., Swansea, UK

fYear

2011

fDate

5-8 Sept. 2011

Firstpage

1

Lastpage

5

Abstract

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.

Keywords

OFDM modulation; dynamic programming; frequency allocation; quality of service; computational complexity; dynamic programming; greedy programming; multiband coded OFDM system; optimization algorithm; power allocation method; quality of service; Dynamic programming; Encoding; Greedy algorithms; Heuristic algorithms; Modulation; OFDM; Resource management;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2011 IEEE

Conference_Location

San Francisco, CA

ISSN

1090-3038

Print_ISBN

978-1-4244-8328-0

Type

conf

DOI

10.1109/VETECF.2011.6093066

Filename

6093066