Proceedings Article10.1109/ICC.2010.5502109
A Hughes-Hartogs Algorithm Based Bit Loading Algorithm for OFDM Systems
Han Zhang,J. Fu,Jian Song +2 more
- 23 May 2010
- pp 1-5
14
TL;DR: The proposed bit loading algorithm, based on the Hughes-hartogs algorithm, is appropriate for practical OFDM systems with either uniform or different SNR gaps in wireless channels for its low computational complexity and good performance.
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Abstract: This paper proposes a bit loading algorithm for orthogonal frequency division multiplexing (OFDM) systems. With the restrictions of available transmit power and required bit-error-rate (BER) performance, the algorithm aims at achieving the maximal data rate. Although the proposed algorithm is based on the Hughes-hartogs algorithm, the computational complexity is only $O(k \times M)$,where k denotes the number of iterations required to meet the constraints and M denotes the number of subcarriers. Simulation results show that $15$ iterations are sufficient to meet the constrains, and the degradation of information bits loaded per OFDM symbol is less than one percent over the entire available transmit power. The proposed algorithm is appropriate for practical OFDM systems with either uniform or different SNR gaps in wireless channels for its low computational complexity and good performance.
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Citations
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Transmit power and bit allocations for OFDM systems in a fading channel
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- 01 Jan 2003
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TL;DR: The general technique of parallel transmission on many carriers, called multicarrier modulation (MCM), is explained, and the performance that can be achieved on an undistorted channel and algorithms for achieving that performance are discussed.
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Patent
Ensemble modem structure for imperfect transmission media
Dirk Hughes-Hartogs
- 05 May 1986
TL;DR: In this paper, a high speed modem that transmits and receives digital data on an ensemble of carrier frequencies spanning the usable band of a dial-up telephone line is described, which includes a system for variably allocating data and power among the carriers to compensate for equivalent noise and to maximize the data rate.
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Transmit power and bit allocations for OFDM systems in a fading channel
Ji-Ho Jang,Kwang Bok Lee,Yong-Hwan Lee +2 more
- 01 Dec 2003
TL;DR: The proposed algorithm, based on the water-filling approach, is appropriate for OFDM systems in a time varying wireless channel for its low computational complexity and good performance.
•Dissertation
Transmit power and bit allocations for OFDM systems in a fading channel
장지호
- 01 Jan 2003
56