Low latency multi-amplitude modulation receiver

Abstract

A multi-amplitude modulation receiver includes a signal coupler block coupled to a mixer array block receiving a first input signal from the signal coupler block and a second input from a LO circuit that provides N overlapping phase signals. Outputs of the N mixer elements are coupled to a baseband filter (BBF) block then to a decision threshold block including decision threshold elements including a signal input and at least one comparator receiving at least one Vvalue. A phase ordering and mapper block selects M out of the N phases. A digital logic and control block is coupled to control a filter gain and corner frequency of the BBF block and control the Vvalue for the decision threshold block which compares a signal received to the Vvalue. Outputs from the decision threshold block are coupled inputs of an M-input decision combiner which provides a single data output.