Title :
A Modified 16-QAM Modem for 140-MBIT/S Radio-Relay Systems
Author :
Bessai, H. ; Lorek, W.
Abstract :
A description is given of a 16-QAM modem for 140-Mbit/s radio-relay systems which requires no differential encoding because a reference phase is marked in the modulator. A fully automatic computer-controlled measuring system in connection with a fading simulator allowed the bit error rate to be measured as a function of the signal-to-noise ratio. This was done in the presence of random fading for different variance values.
Keywords :
Bit rate; Digital modulation; Encoding; Fading; Frequency; Modems; Phase modulation; Quadrature amplitude modulation; Signal processing; Uncertainty;
Conference_Titel :
Microwave Conference, 1982. 12th European
Conference_Location :
Helsinki, Finland
DOI :
10.1109/EUMA.1982.333069
