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Efficient Low Bit-Rate Low-Latency Channelization in DECT

Author(s): Budhiraja Rohit | Ramamurthi Bhaskar

Journal: EURASIP Journal on Wireless Communications and Networking
ISSN 1687-1472

Volume: 2006;
Issue: 1;
Start page: 054148;
Date: 2006;
Original page

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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