If you are involved in the planning, design, testing, installation, maintenance, sales, or frequency management of digital PMR equipment and systems, this first-of-its-kind book is a smart choice. Written by one of the key developers of PMR, this essential reference provides comprehensive coverage of digital PMR systems, including the standards APCO 25, TETRA and DIIS and the proprietary systems ASTRO, EDACS, iDEN, MOBITEX II and TETRAPOL. Offering unique insight from the authorOCOs years of experience working with this technology, the book helps you gain a solid understanding of the transition from analogue to digital PMR. It provides you with methods for estimation coverage distance and bandwidth for digital PMR systems.qOnly a limited number of parameters are used to describe speech with sufficient accuracy. ... Hence, instead of digitizing and transmitting sample after sample, it is easier to split the signal into intervals of usually 20-30 ms ... It is interesting to compare the speech quality of the 5.9 A Short Introduction to Speech Encoding 169.
|Title||:||Introduction to Digital Professional Mobile Radio|
|Publisher||:||Artech House - 2003|