Bit and power allocation algorithm based on preload in OFDM system

Xian Wu; Jun Zhang; Zhong Kan Liu

Bit and power allocation algorithm based on preload in OFDM system

Xian Wu^*, Jun Zhang, Zhong Kan Liu

^*Corresponding author for this work

Beihang University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

In OFDM system, a bit and power allocation method based on bit-preloading is proposed in order to achieve a result with minimum Bit Rate Error (BER) under the constraint of total transmission power and data rate within a shorter calculation time. It is proved that the bit-loading result of Minimum Total Virtual Power (MTVP) is the same as that of minimizing BER. Then an iteration method aiming at the MTVP is proposed, in which the preload of bit according to BER threshold is used to decrease the iteration times. The simulation shows that the proposed bit and power allocation method based on preload approaches the optimal solution as well as computes efficiently.

Original language	English
Pages (from-to)	132-137
Number of pages	6
Journal	Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology
Volume	44
Issue number	1
Publication status	Published - Jan 2012
Externally published	Yes

Keywords

Bit-loading
OFDM
Power-allocation
Virtual power

Cite this

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title = "Bit and power allocation algorithm based on preload in OFDM system",

abstract = "In OFDM system, a bit and power allocation method based on bit-preloading is proposed in order to achieve a result with minimum Bit Rate Error (BER) under the constraint of total transmission power and data rate within a shorter calculation time. It is proved that the bit-loading result of Minimum Total Virtual Power (MTVP) is the same as that of minimizing BER. Then an iteration method aiming at the MTVP is proposed, in which the preload of bit according to BER threshold is used to decrease the iteration times. The simulation shows that the proposed bit and power allocation method based on preload approaches the optimal solution as well as computes efficiently.",

keywords = "Bit-loading, OFDM, Power-allocation, Virtual power",

author = "Xian Wu and Jun Zhang and Liu, {Zhong Kan}",

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AU - Wu, Xian

AU - Zhang, Jun

AU - Liu, Zhong Kan

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N2 - In OFDM system, a bit and power allocation method based on bit-preloading is proposed in order to achieve a result with minimum Bit Rate Error (BER) under the constraint of total transmission power and data rate within a shorter calculation time. It is proved that the bit-loading result of Minimum Total Virtual Power (MTVP) is the same as that of minimizing BER. Then an iteration method aiming at the MTVP is proposed, in which the preload of bit according to BER threshold is used to decrease the iteration times. The simulation shows that the proposed bit and power allocation method based on preload approaches the optimal solution as well as computes efficiently.

AB - In OFDM system, a bit and power allocation method based on bit-preloading is proposed in order to achieve a result with minimum Bit Rate Error (BER) under the constraint of total transmission power and data rate within a shorter calculation time. It is proved that the bit-loading result of Minimum Total Virtual Power (MTVP) is the same as that of minimizing BER. Then an iteration method aiming at the MTVP is proposed, in which the preload of bit according to BER threshold is used to decrease the iteration times. The simulation shows that the proposed bit and power allocation method based on preload approaches the optimal solution as well as computes efficiently.

KW - Bit-loading

KW - OFDM

KW - Power-allocation

KW - Virtual power

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JO - Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

JF - Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

IS - 1

ER -

Bit and power allocation algorithm based on preload in OFDM system

Abstract

Keywords

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