Title :
MPEG coded news dispatches over GSM HSCSD
Author :
Neale, J.D. ; Jones, E.V. ; Zubrzycki, J.T.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
Remote news reporting via fixed telephones suffers from a lack of mobility and sound quality limitations. GSM high speed circuit switched data (HSCSD) offers bit rates up to 80 kb/s suitable for MPEG coded audio news reports. Mean opinion scores for MPEG-2 Layer 3 audio coded at various bit rates within the HSCSD range explore the trade-off between increased audio coding rate and the listeners perception of the quality. Computer simulations demonstrate that a mean of 3 GSM channels (aggregate of 28.8 kb/s) should be available for each HSCSD mobile transmission. Two methods of returning enhanced quality audio (10 kHz) are considered and the effects of transmission errors in urban and rural environments simulated. Techniques to reduce the effect of errors are also evaluated. The MOS results compare the schemes with a standard GSM traffic channel
Keywords :
audio coding; cellular radio; circuit switching; code standards; data communication; telecommunication channels; telecommunication standards; 10 kHz; 28.8 kbit/s; 80 kbit/s; GSM HSCSD; GSM traffic channel; MOS results; MPEG coded audio news reports; MPEG-2 Layer 3 audio; audio coding rate; bit rates; computer simulations; enhanced quality audio; high speed circuit switched data; mean opinion scores; mobile transmission; quality perception; remote news reporting; rural environment; transmission errors; urban environment; Aggregates; Audio coding; Bit rate; Computational modeling; Computer errors; Computer simulation; GSM; Mobile computing; Switching circuits; Telephony;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776578
