A correlated diversity Rayleigh fading (CDRF) channel models inter-diversity fading and signal correlations. This paper considers the multiuser CDRF channel wherein several users transmit information simultaneously using signals with inter-diversity as well as inter-user correlations. Each user employs DPSK modulation. Besides allowing simple noncoherent detection without channel estimation alg...

Despite several works on secrecy coding for fading and MIMO wiretap channels from an error probability perspective, the construction of information theoretically secure codes over such channels remains as an open problem. In this paper, we consider a fading wiretap channel model where the transmitter has only partial statistical channel state information. We extend the flatness factor criterion...

In this paper, we proposed a novel efficient method of analyzing the ergodic channel capacity of the cooperative amplify-and-forward (CAF) relay system. This is accomplished by employing a very tight approximate moment generating function (MGF) of end-to-end signal-to-noise ratio of 2-hop multi-relay system, which is In this paper, we proposed a novel efficient method of analyzing the ergodic c...

Exact error probability expressions for noncoherent M-ary frequency-shift-keying (MFSK) systems that employ postdetection equal-gain diversity over Rayleigh, Rician and Nakagami-m channels are derived using a Laplace derivative formula. Both independent and generically correlated fading cases are considered. For independent fading, closed-form solutions are also derived for both Nakagami-q fadi...

When the mechanisms that cause fading in communication channels were first modeled in the 1950s and 1960s, the principles developed were primarily applied to over-the-horizon communications covering a wide range of frequency bands. The 3-30 MHz high-frequency (HF) band used for ionospheric propagation, as well as the 300 MHz-3 GHz ultra-high-frequency (UHF) and the 3-30 GHz superhigh-frequency ...

We address the problem of estimating time-varying fading channels in filter bank multicarrier (FBMC/OQAM) wireless systems based on pilot symbols. The standard solution to this problem is the least square (LS) estimator or the minimum mean square error (MMSE) estimator with possible adaptive implementation using recursive least square (RLS) algorithm or least mean square (LMS) algorithm. Howeve...

Assume a STC (space-time codes) OFDM (orthogonal frequency-division multiplexing) scheme the receiver antennas and multiple transmitters on compared time-chosen fading channels and frequency. It has been displayed that the time-selectivity product array is the input parameter to describe the associated fading channel outage capacity. It is considered that space-time codes with huge efficient ex...

Abstract— The direct sequence-code division multiple accesses (DS-CDMA) signals are transmitted over multipath channels that introduce fading and shadowing. Combined effect of multipath fading and shadowing along with multiple access interference (MAI) and inter-symbol interference (ISI) worsens the system performance. Further, experimental results have confirmed the presence of impulsive nonGa...

This paper analyzes the performance of Channel Side Information (CSI)-assisted cooperative amplify-andforward (CAF) relay networks that employ both the node placement (i.e., relay position) based optimal power allocation policy among collaborating nodes and adaptive M-ary quadrature amplitude modulation (M-QAM)/ M-ary phase shift keying (M-PSK) techniques in generalized wireless fading environm...

The performance of the minimum mean-squared error (MMSE) receiver for detection of direct sequence code division multiple access is considered in various fading channel models. Several modifications to the basic MMSE receiver structure which have been recently proposed for use on nonselective fading channels are reviewed and shown to represent different approximations to a single common form. T...