Title :
Field performance of a 128 QAM, 155 Mb/s SONET digital radio system
Author :
Boe, J. ; Smith, H. ; Noda, S. ; Koizumi, Y. ; Fujimoto, Y. ; Wagner, P.
Author_Institution :
US West Communications, Denver, CO, USA
Abstract :
Preliminary results are presented for a performance trial in eastern Colorado for a 6-GHz, 128-QAM, 155-Mb/s digital radio system. This system, which uses the standard North American 30-MHz channelization plan for 6 GHz, used 128-QAM modulation to maximize system gain, minimize the impact of foreign system interference, and provide the capability to transport the 155-Mb/s, OC-3 SONET payload structure with a very low residual background bit-error-rate. The results provide a preliminary view of 128-QAM digital radio performance in a fading environment, including errored second (ES) and severe errored second (SES) performance
Keywords :
SONET; amplitude modulation; digital radio systems; microwave links; 128-QAM SONET digital radio system; 155 Mbit/s; 6 GHz; OC-3 SONET payload; SHF; fading environment; field performance; severe errored second performance; Bandwidth; Digital communication; Fading; Frequency diversity; Interference; Payloads; Quadrature amplitude modulation; Repeaters; SONET; Testing;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188505
