Mathematical Definition
A RAKE receiver utilizes multiple correlators to separately detect M strongest multipath components. Each correlator may be quantized using 1, 2, 3 or 4 bits.
The outputs of each correlator are weighted to provide better estimate of the transmitted signal than is provided by a single component. Demodulation and bit decisions are then based on the weighted outputs of the M correlators.
Read more about this topic: Rake Receiver
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