Frequency-selective detection at three signal amplitudes

Detection of Stbc Signal in Frequency Selective Fading Channels

Transmit diversity through two-transmit and one-receive antennas (DISO) with Alamouti’s Space-Time block coding (STBC) assumes the channel be flat and static over the coding block. Lindskog and Paulraj have extended this scheme for a time dispersive channel by doing the space-time coding over a large data block such as one burst. This helps to achieve diversity gain on a time-dispersive channel...

Iterative Signal Detection in Frequency Selective MIMO Channels with Unknown Cochannel Interference

Performance of iterative receivers for multiple access systems in frequency selective multiple-input multiple-output (MIMO) channels is severely degraded in the presence of unknown interference. Iterative estimation of the covariance matrix of the unknown interference is known as one possible solution to this problem. In this paper we propose the use of soft instead of hard feedback for the cov...

Chapter 12 Signal Detection Using Time - Frequency

Signal detection Using Rational Function Curve Fitting

In this manuscript, we proposed a new scheme in communication signal detection which is respect to the curve shape of received signal and based on the extraction of curve fitting (CF) features. This feature extraction technique is proposed for signal data classification in receiver. The proposed scheme is based on curve fitting and approximation of rational fraction coefficients. For each symbo...

Frequency-selective surface acoustic invisibility for three-dimensional immersed objects

This paper is focused on the study of acoustic metasurface cloaking, based on the use of appropriate ultrathin pseudo-surfaces that may act as cloaking devices for a finite range of frequencies. The technique consists in tailoring the appropriate acoustic surface impedance which cancels the scattered field of a diffracting spherical obstacle placed in the trajectory of an impinging acoustical w...