Adaptive Bit allocation algorithm based on unsaturated bandwidth of multimode fiber for optical OFDM system

For the greedy algorithm required a large number of iterations, this paper proposed one adaptive bit allocation algorithm based on Hughes-Hartogs algorithm which was improved greedy algorithm .Under the constraint of bit error rate and data transmission rate, the algorithm first used the Chow algorithm to allocate some of the bits, and then used the greedy algorithm to allocate the remaining bits. When minimize the total power by this algorithm, the iterations of this algorithm were significantly less than the greedy algorithm. By computer simulation, the results showed that performance of this algorithm was very close to the greedy algorithm, and the number of this algorithm’s iterations was 7.4%~34% of the greedy algorithm.

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Bit allocation algorithm for multi-user adaptive OFDM system with adaptive trellis coded MQAM

IEEE CCECE2002 Canadian Conference on Electrical and Computer Engineering Conference Proceedings (Cat No 02CH37373) CCECE-02 ◽

10.1109/ccece.2002.1012938 ◽

2003 ◽

Author(s):

Shenghui Song ◽

Chunping Hou ◽

Dazhong Cao

Keyword(s):

Bit Allocation ◽

Ofdm System ◽

Allocation Algorithm ◽

Adaptive Ofdm ◽

Trellis Coded

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An Efficient Adaptive Power and Bit Allocation Algorithm for MIMO OFDM System Operating in a Multi User Environment

2006 IEEE 63rd Vehicular Technology Conference ◽

10.1109/vetecs.2006.1683092 ◽

2006 ◽

Cited By ~ 3

Author(s):

P. Uthansakul ◽

M.E. Bialkowski

Keyword(s):

Bit Allocation ◽

Ofdm System ◽

Allocation Algorithm ◽

Mimo Ofdm ◽

Adaptive Power ◽

System Operating

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A Fast Adaptive Transmit Power and Bit Allocation in OFDM System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.765-767.444 ◽

2013 ◽

Vol 765-767 ◽

pp. 444-447

Author(s):

Juan Wen ◽

Qi Ming Tian

Keyword(s):

Theoretical Analysis ◽

Bit Error Rate ◽

Error Rate ◽

Bit Allocation ◽

Ofdm System ◽

Transmit Power ◽

Allocation Algorithm ◽

Bisection Algorithm ◽

Simulation Results ◽

Adaptive Transmit Power

In this paper, we propose a fast and optimal adaptive transmit power and bit allocation algorithm, which is called Bisection Searching Level (BSL) for wireless OFDMA systems. The algorithm aims at maximization of data rate under the constraints of total transmit power and bit error rate (BER). BSL is based on water pouring approach, and adopt bisection algorithm to find the water pouring level under discrete bit restriction. Both theoretical analysis and simulation results demonstrate the optimality of our proposed algorithm.

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