A Loading Algorithm with Power Constraints in Adaptive Modulation for V-BLAST Systems

doi:10.13190/jbupt.200601.48.songy

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (1): 48-51.doi: 10.13190/jbupt.200601.48.songy

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A Loading Algorithm with Power Constraints in Adaptive Modulation for V-BLAST Systems

SONG Yang¹, CHANG Yong-yu¹, ZHANG Xin^1,2, YANG Da-cheng¹

1.School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
2.State Key Laboratory of Mobile Communications, Southeast University, Nanjing 210096, China

Received:2005-01-05 Online:2006-02-28 Published:2006-02-28
Contact: SONG Yang E-mail:young.song.cn@163.com

Abstract

Abstract:

A bit loading and power allocation algorithm with low complexity in adaptive modulation for vertical-Bell laboratory layered space-time systems was proposed to implement the rate maximization, satisfying peak power constraint on each antenna as well as the average total power limit. The proposed algorithm is of the same optimal allocation as the incremental algorithm while the computation complexity declines significantly. The simulation results show that the limitation of per-antenna peak power will decrease the bit rate under the target bit error rate.

Key words: vertical-Bell laboratory layered space-time, adaptive modulation, loading algorithm, power constraint

CLC Number:

TN911.22

SONG Yang, CHANG Yong-yu, ZHANG Xin, YANG Da-cheng. A Loading Algorithm with Power Constraints in Adaptive Modulation for V-BLAST Systems[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2006, 29(1): 48-51.

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A Loading Algorithm with Power Constraints in Adaptive Modulation for V-BLAST Systems

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