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INBOUND COVERAGE METHOD BASED ON IMBE ERROR CORRECTION

IP.com Disclosure Number: IPCOM000008522D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-19

Publishing Venue

Motorola

Related People

Authors:
Don Newberg Robert LoGalbo Brad Hiben

Abstract

In a digital mobile radio system, such as the APCO Project 25 system, receiver voting may be utilized to improve inbound coverage, where a com- parator is used to select the best inbound signal from a number of base station receivers. The voting in the Motorola AstroTAC comparator is performed by selecting the signal with the lowest number of errors detected in the Improved Multiband Excitation (IMBE) vocoder's most important Golay(23,12) error correction code word. A digital interface unit (DIU) is used to convert between digital and analog voice signals using the IMBE vocoder.