Title :
Long-term wide-bandwidth channel characteristics and bandwidth-dependent fading for a mid-latitude HF path
Author :
Rifkin, R. ; Perry, B.D.
Author_Institution :
MITRE Corp., Bedford, MA, USA
Abstract :
The MITRE wide-bandwidth HF test facility is used to measure the channel characteristics of a west-east 3000 km path from Boulder, CO, to Bedford, MA, USA. A 1 MHz bandwidth direct-sequence pseudo-noise coded probing signal repetitively estimates the channel impulse response over runs lasting several minutes. Owing to the wideband signaling, the receiver can resolve a particular mode and examine it by itself. Several fading statistics are calculated, including standard deviation of the received power, decorrelation time, and fade depth and incremental fade depth at a specified probability of occurrence. In addition, long-term data are obtained for the time-of-arrival drifts of the centroid of the channel impulse response
Keywords :
fading; ionospheric electromagnetic wave propagation; radiowave propagation; telecommunication channels; transient response; 1 MHz; 3000 km; Bedford; Boulder; MITRE; USA; bandwidth-dependent fading; centroid arrival time drift; channel impulse response; decorrelation time; direct sequence signal; fading statistics; incremental fade depth; ionospheric radiowave propagation; long-term data; mid-latitude HF path; mode resolution; pseudo-noise coded probing signal; received power; standard deviation; west-east path; wide-bandwidth HF test facility; wide-bandwidth channel;
Conference_Titel :
HF Radio Systems and Techniques, 1991., Fifth International Conference on
Conference_Location :
Edinburgh
