Robust wireless communication at tens of Mb/s in a limited bandwidth requires sophisticated techniques to mitigate impairments such as adjacent-channel interference (ACI), co-channel interference (CCI), and multipath. Spatial diversity minimizesthe effects of such impairments by using multiple received signals from spatially-distinct antennas to nullify directional interference. This 42Mb/s diversity QAM receiver includes a 4-channel 1-7MBaud demodulator with variable channel selection, adaptive antenna combiner, matched filter, adaptive equalizer, and synchronization.
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