Priority Based Blind Equalization for Hierarchical Modulation Systems

CMA blind equalization for OFDM based Multi-hop Cooperative Systems

There has been emerging study on OFDM integrated multihop cooperative system and this paper focuses on investigation of such systems with blind equalization techniques. Relaying capable OFDM network incorporated with Constant Modulus Algorithm addresses towards solution of problems regarding delay and large values of MSE in multihop systems utilizing conventional equalization. The optimization ...

Blind Equalization for Tomlinson-Harashima Precoded Systems

At a communications receiver the observed signal is a corrupted version of the transmitted signal. This distortion in the received signal is due to the physical characteristics of the channel, including multipath propagation, the non-idealities of copper wires and impulse noise. Equalization is a process to combat these distortions in order to recover the original transmitted signal. Roughly st...

Automatic Modulation Classification and Blind Equalization for Cognitive Radios

Matched pdf-based blind equalization

In this paper, a new blind equalization algorithm for multilevel modulations is proposed. It is based on maximizing the correlation between the probability density function (pdf) of the signal at the output of the equalizer and the desired pdf. The algorithm employs the Parzen window method to estimate the pdf of the squared modulus of the equalizer output. A stochastic gradient-based algorithm...

Blind channel identification and equalization in OFDM-based multiantenna systems

Wireless systems employing multiple antennas at the transmitter and the receiver have recently been shown to have the potential of achieving extraordinary bit rates. Orthogonal frequency division multiplexing (OFDM) significantly reduces receiver complexity in multiantenna broadband systems. In this paper, we introduce an algorithm for blind channel identification and equalization in OFDM-based...