Title :
RZ SSB transceiver with equal-gain combiner for speech and data transmission
Author :
Daikoku, Kazuhiro ; Suwa, Keisuke
Author_Institution :
Radio Commun. Syst. Lab., NTT, Kanagawa, Japan
fDate :
28 Nov-1 Dec 1988
Abstract :
An RZ SSB (real zero single sideband) transceiver equipped with recently developed circuits, such as an equal-gain combiner including a random FM noise canceller, and a digital linearizer, is considered. The circuits enable SINAD performance to be measured in nonfading and Rayleigh fading environments and compared to those measured for a 12.5-kHz-channel-spacing FM system in similar environments. The equal-gain combiner makes it possible to improve greatly the bit error rates of a 9.6-kb/s and a 4.8-kb/s modem for 40 Hz fading, without using error-correcting codes or other measures. It is concluded that the RZ SSB transceiver can be used for speech and/or data transmission in mobile communications
Keywords :
transceivers; 12.5 kHz; 4.8 kbit/s; 9.6 kbit/s; FM; RZ SSB transceiver; SINAD; data transmission; digital linearizer; equal-gain combiner; error-correcting codes; fading; random FM noise canceller; real zero single sideband; Amplitude modulation; Bit error rate; Circuits; Data communication; Error correction codes; Modems; Noise cancellation; Rayleigh channels; Speech; Transceivers;
Conference_Titel :
Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE
Conference_Location :
Hollywood, FL
DOI :
10.1109/GLOCOM.1988.25953
