TRANSMISSION PERFORMANCE EVALUATION OF VOICE ENCODING TECHNOLOGY FOR THE INMARSAT MINI-M SYSTEM

✍ Scribed by DIMOLITSAS, S. ;CORCORAN, F. L. ;RAVISHANKAR, C. ;WONG, A. ;DE CAMPOS NETO, S. F.

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 660 KB
• Volume: 14
• Category: Article
• ISSN: 0737-2884
• DOI: 10.1002/(sici)1099-1247(199609)14:5<381::aid-sat555>3.0.co;2-q

✦ Synopsis

In this paper are presented the method and results of a subjective evaluation, which was conducted in order to select a new speech codec for the Inmarsat mini-M system. The mini-M system is designed to provide the next generation of global, notebook-sized satellite terminals for transportable, land-mobile and maritime voice, facsimile, and data communications. Overall, six different codecs operating at a combined source and channel rate of 4.8 kbit/s were evaluated in a series of six subjective tests. From this, it was concluded that one codec was able to deliver performance that is equivalent to, or better than, the IS-54 full-rate ditigal cellular 8 kbit/s VSELP codec, and was selected for use in the mini-M system.