Abstract—In 3GPP LTE communication systems, the physical layer is based on Orthogonal Frequency-Division Multiple Access and Single Carrier Frequency-Division Multiple Access in the downlink and uplink, respectively. For both schemes two different cyclic prefix (CP) lengths are standardized, a normal CP length and an extended version, the latter being intended for high delay spread channels. We...

We introduce the extended binary phase shift keying EBPSK communication system which is different from traditional communication systems by using a special impacting filter SIF for demodulation. The joint detection technique is applied at the demodulator side in order to improve the performance of the system under intersymbol interference ISI . The main advantage of the joint detection techniqu...

Abstract—To combat the effect of intersymbol interference (ISI) while transmitting data over an ISI channel in a coded data transmission system, the impulse response of the channel is required. As part of the turbo equalization approach, which facilitates iterative equalization and decoding, we introduce a method to iteratively improve the quality of the estimate of the channel characteristics....

In wideband DS-SS systems the Rake receiver is commonly used to utilize the multipath diversity of the mobile radio channel. In the case of good spreading code correlation properties the multipath components of the received signal can be separated with low interpath interference (IPI). At low spreading gains the good correlation properties of the spreading codes are lost and the Rake receiver p...

We consider the multiple-input multiple-output (MIMO) wiretap channel with intersymbol interference (ISI) in which a transmitter (Alice) wishes to securely communicate with a receiver (Bob) in presence of an eavesdropper (Eve). We focus on the practically relevant setting in which there is no channel state information (CSI) at Alice about either of the channels to Bob or Eve, except statistical...

A signal transimitted through a wireless channel may be severely distorted due to intersymbol interference (ISI) and multiple access interference (MAI). In this paper, we propose an efficient CDMA receiver based on a frequency domain equalization with a regularized zero forcing equalizer and unit clipper decision with parallel interference cancellation (FDE-RZF-CPIC) to combat both ISI and MAI....

In a discrete multitone receiver, a time-domain equalizer (TEQ) reduces intersymbol interference (ISI) by shortening the effective duration of the channel impulse response. Current TEQ design methods such as minimum mean-squared error (MMSE), maximum shortening SNR (MSSNR), and maximum geometric SNR (MGSNR) do not directly maximize bit rate. In this paper, we develop two TEQ design methods to m...

We consider the problem of simultaneous parameter estimation and restoration of finite-alphabet symbols that are blurred by an unknown linear intersymbol interference (ISI) channel and contaminated by additive Gaussian or non-Gaussian white noise with unknown parameters. Non-Gaussian noise is found in many wireless channels due to impulsive phenomena of radio-frequency interference. Bayesian in...