Open Access

Efficient Low Bit-Rate Low-Latency Channelization in DECT

EURASIP Journal on Wireless Communications and Networking20062006:054148

DOI: 10.1155/WCN/2006/54148

Received: 12 September 2005

Accepted: 12 February 2006

Published: 21 May 2006

Abstract

In a TDMA standard such as DECT, low bit-rate transmission is feasible either at the cost of efficiency (shorter slots with fixed overhead per slot) or increased latency (longer frames). This paper proposes a new scheme for low bit-rate low-latency channelization in the DECT standard, in which data can be efficiently transmitted at rates as low as 10 kbps. This could be useful for sending acknowledgments for a high-speed data communication link, or for vocoder/VoIP traffic. The proposed scheme enables efficient low bit-rate transmission by dividing a DECT channel into four subbands, and by employing a new slot structure wherein TDMA overhead is kept to a minimum. It is shown that the proposed scheme can coexist with the DECT system and can be implemented using existing IMT-2000 DECT hardware with minor modifications. A comparison is also made of the proposed scheme with existing options for low bit-rate channelization in DECT.

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Authors’ Affiliations

(1)
Midas Communication Technologies Pvt. Ltd.
(2)
Telecommunication and Computer Networking (TeNet) Group, Department of Electrical Engineering, IIT-Madras

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Copyright

© R. Budhiraja and B. Ramamurthi. 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.