Non-Coherent Multi-Symbol-Delay Differential Detector

摘要

An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.

主权项

1. A system comprising:
a wireless communication receiver comprising:
a first delay operable to delay a complex digital signal by a first number of samples to generate a first delayed signal, the complex digital signal corresponding to a wireless transmission of a symbol sequence;a second delay operable to delay the complex digital signal by a second number of samples to generate a second delayed signal;a differential detector operable to generate a first differential sequence based on the first delayed signal and generate a second differential sequence based on the second delayed signal;anda decoder operable to estimate the transmitted symbol sequence based on the first differential sequence and the second differential sequence.