On QAM Speech Transmission Schemes for Microcellular Mobile - PCNs
On QAM Speech Transmission Schemes for Microcellular Mobile - PCNs
On the way towards third generation personal communication networks (PCN) the deployment of 16-level quadrature amplitude modulation (QAW schemes is investigated via flat microcellular Rayleigh-fading mobile radio channels having mild co-channel interference with and without diversity. Our proposed differentially coded non-coherent 16-QAM scheme requires no pilot symbol assistance, no automatic gain control (AGC) and no carrier recovery. High speech quality associated with a mean opinion score of about four (MOS = 4.0) is ensured at a signalling rate of 6.1 kBd for channel signal to noise ratios tSNR) above 30 - 25 dB and signal to interference ratios (SIR) above 75 - 30 dB by the 13.4 kbit/s medium complexity regular pulse excited (RPE) speech codec, when carefully matched twin-class low complexity binary Bose-Chaudhuri-Hocquenghem (BCHI error correction coding and 16-QAM combined with second order diversity are deployed. The overall speech delay is about 10 Ins and the user bandwidth is 9.3 kHz. which allows us to accommodate 2 1 users in a 300 kHz channel slot.
495-510
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Webb, W
49e825fd-78f7-4238-be9e-08bd9499fd7c
Salami, R
f75a385d-04ed-4cdb-a349-c94d8eb0adb1
Steele, R
7035a3e5-8a4c-434b-a105-46fe2d63d5c3
September 1993
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Webb, W
49e825fd-78f7-4238-be9e-08bd9499fd7c
Salami, R
f75a385d-04ed-4cdb-a349-c94d8eb0adb1
Steele, R
7035a3e5-8a4c-434b-a105-46fe2d63d5c3
Hanzo, L, Webb, W, Salami, R and Steele, R
(1993)
On QAM Speech Transmission Schemes for Microcellular Mobile - PCNs.
European Transactions on Communications, 4 (5), .
Abstract
On the way towards third generation personal communication networks (PCN) the deployment of 16-level quadrature amplitude modulation (QAW schemes is investigated via flat microcellular Rayleigh-fading mobile radio channels having mild co-channel interference with and without diversity. Our proposed differentially coded non-coherent 16-QAM scheme requires no pilot symbol assistance, no automatic gain control (AGC) and no carrier recovery. High speech quality associated with a mean opinion score of about four (MOS = 4.0) is ensured at a signalling rate of 6.1 kBd for channel signal to noise ratios tSNR) above 30 - 25 dB and signal to interference ratios (SIR) above 75 - 30 dB by the 13.4 kbit/s medium complexity regular pulse excited (RPE) speech codec, when carefully matched twin-class low complexity binary Bose-Chaudhuri-Hocquenghem (BCHI error correction coding and 16-QAM combined with second order diversity are deployed. The overall speech delay is about 10 Ins and the user bandwidth is 9.3 kHz. which allows us to accommodate 2 1 users in a 300 kHz channel slot.
Text
lh-ww-rs-ras-ETC-sept1993.pdf
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More information
Published date: September 1993
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 251370
URI: http://eprints.soton.ac.uk/id/eprint/251370
PURE UUID: 9387db6c-9c44-482c-8a2d-044ae69492ae
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Date deposited: 28 Oct 1999
Last modified: 18 Mar 2024 02:32
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Contributors
Author:
L Hanzo
Author:
W Webb
Author:
R Salami
Author:
R Steele
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