Patent ID: 9094253
Filing Date: 2015-07-28
Classification: H04B,H04L

Abstract:
1. An adaptive communication receiver for the demodulation and detection of digitally modulated signals received over wireless communication channels exhibiting multipath and fading, the receiver comprised of: an RF front end; an RF to complex baseband converter; a band limiting matched filter; a channel gain normalizer comprised of a channel signal power estimator, a channel gain estimator, and a parameter αestimator for providing the normalized channel output; a blind mode adaptive equalizer with hierarchical structure (BMAEHS) comprised of a level 1 adaptive system and a level 2 adaptive system for the equalization of the normalized channel output wherein the level 2 adaptive system is further comprised of a channel estimator and a model error correction signal generator; an initial data segment recovery circuit comprised of a fixed equalizer for recovery of the data symbols received during the initial convergence period of the BMAEHS; a differential decoder; a complex baseband to data bit mapper; and an error correction code decoder and de-interleaver.