GSM Transmitter and Receiver

Abstract

Global System for Mobile communications is a digital cellular communicationssystem called as GSM. In wireless communication technology, quality of voice outputat destination depends on the channel condition. Bad channel condition will producedistortion in the voice output and hence degrades the voice quality. Low bit ratemodes is used in a bad channel condition to allow more bits for channel coding, whilehigh bit rate on the contrary. Various speech coding techniques, such as LPC andRPE-LTP are used in dierent applications. MATLAB simulation is used to observeand calculate errors occur in the GSM transmitter and receiver system.In these report, the fundamental challenges and the basic issues in speech coderdesign are discussed. The important speech coding techniques and standards withcurrent and future applications also described. The speech coding techniques arepresented and their properties, such as performance, complexity, and coding delay areanalyzed. I have implemented GSM speech codec LPC and RPE-LTP in a MATLAB.GSM Transmitter and Receiver is implemented in MATLAB Simulink and it is foundthat the transmitted data is being received properly with an bit error rate of 0.004712.