A direct sequence spread spectrum receiver for operating in a multipath fading channel comprises a rake receiver having plural rake fingers.
The amplitude-versus-frequency profile of received signals is affected by multipath fading.
By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference.
In order to reduce the computation amount signal fading parameters are determined at some point of each sub-area by a ray tracing method and the average effect of signal multipath fading in the sub-area is calculated using said parameters.
A radio receiver having an adaptive filter capable of stably suppressing multipath fading and flat fading.
The outputs of each path are then combined in a combiner circuit (12) to generate the multipath-faded test signal.
Where multi-path fading occurs, smaller variations in average power over the frame will occur leading to improved system capacity.
In frequency division duplex techniques, multi-path fading on the down-link is uncorrelated with multi-path fading on the up-link.
Carrier quality measurements are taken (503) in which carrier quality is a function of interference (I) and multi-path fading and carrier-signal strength (C).
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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