Title :
A Novel Adaptive Bit and Power Allocation Algorithm Based on OFDMA Systems
Author_Institution :
Dept. of Inf. Syst. & Electron. Eng., Zhejiang Gongshang Univ., Hangzhou, China
Abstract :
This paper proposed a novel bit and power allocation algorithm for OFDMA systems. Compared with previous schemes, the proposed algorithm is considered with two different stages to improve the bit and power allocation algorithm performance instead of traditional one stage. Two different stages proposed in this paper include RLB algorithm and B-Tighten algorithm. The numeric results show this algorithm has lower computational complexity in the overall transmission power by constraining the fixed data rate and bit error rate.
Keywords :
OFDM modulation; computational complexity; error statistics; frequency division multiple access; B-Tighten algorithm; OFDMA systems; RLB algorithm; adaptive bit allocation; bit error rate; computational complexity; fixed data rate; power allocation; transmission power; Bit error rate; Bit rate; Computational complexity; Costs; Information science; Information systems; Minimization methods; Power engineering and energy; Signal to noise ratio; Systems engineering and theory;
Conference_Titel :
Information Science and Engineering (ICISE), 2009 1st International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4909-5
DOI :
10.1109/ICISE.2009.110
