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On QAM Speech Transmission Schemes for Microcellular Mobile - PCNs

On QAM Speech Transmission Schemes for Microcellular Mobile - PCNs
On QAM Speech Transmission Schemes for Microcellular Mobile - PCNs
Abstract. On the way towards third generation personal communication networks (PCN) the deployment of 16-level quadrature amplitude nlodulation (QAW schemes is investigated via flat microcellular Rayleiph-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 resular 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
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), pp. 495-510.

Record type: Article

Abstract

Abstract. On the way towards third generation personal communication networks (PCN) the deployment of 16-level quadrature amplitude nlodulation (QAW schemes is investigated via flat microcellular Rayleiph-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 resular 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.

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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
ORCID for L Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 28 Oct 1999
Last modified: 18 Jul 2017 10:10

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Contributors

Author: L Hanzo ORCID iD
Author: W Webb
Author: R Salami
Author: R Steele

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