NDLI: Network signalling compression for bit loading

Content Provider	IEEE Xplore Digital Library
Author	Nguyen, H. Lestable, T.
Copyright Year	2005
Description	Author affiliation: Dept. of Adv. Mobile Solutions, Alcatel Res. & Innovations, Marcoussis, France (Nguyen, H.)
Abstract	Link adaptation technology has been introduced in new generation transmission systems such as 3-G or 4-G, optimizing both their throughput and their power consumption. The adaptation of radio configuration requires information about the radio link quality. The information must be exchanged between the access point and the mobile terminal, leading to an associated signaling load, whose amount may decrease the system transmission efficiency. A mechanism for reducing the amount of signaling information has to be designed for increasing the overall system capacity (more users, more available bandwidth). This paper addresses multi-carrier systems whose link adaptation is carried out by means of bit loading algorithms. However, the associated signaling load increases quickly with the number of sub-carriers, modulation schemes and users. These bit loading vectors are considered a-priori known at the receiver, and almost no literature concerning transmission of such information is available. In realistic transmission systems, correlation exists in time due to Doppler effect, and in frequency due to multi-path delay spread. We intend to exploit this two-fold redundancy to decrease the signaling information load related to the power vector data for bit loading. A compression system for both bit allocation and power allocation of the bit loading is proposed. The performance of such compression system is then evaluated.
Starting Page	735
Ending Page	739
File Size	1409046
Page Count	5
File Format	PDF
ISBN	0780393333
ISSN	15206130
DOI	10.1109/SIPS.2005.1579962
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-02
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power generation Throughput Energy consumption Radio link Signal design Bandwidth Doppler effect Frequency Delay effects Bit rate
Content Type	Text
Resource Type	Article

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