In this paper, we investigate the estimation of multipath parameters and prediction of wideband multipath fading channels for mobile-to-mobile wireless communications. Based on a statistical model for mobile to mobile urban and suburban channels, we derive a parametrized model and utilize two-dimensional ESPRIT algorithm to jointly estimate the delay of arrival (DOA) and effective Doppler frequ...

Bit-interleaved coded phase and amplitude modulation over frequency-non-selective Ricean fading channels without channel state information at the receiver is studied. We propose a low-complexity noncoherent receiver structure which is very well suited to time-variant fading transmission scenarios, and which provides gains of several dB’s in power efficiency compared to conventional differential...

Space-time coding for the flat fading, quasistatic MIMO wireless channel has received wide spread attention. This paper treats space-time code design for frequency selective channels from a single carrier modulation perspective. We present a general framework for analyzing space-time codes for delay spread channels based on PEP analysis. It is shown that as in the flat fading case, diversity ga...

In this paper, we study the modulation diversity obtained by rotating the signal constellation and incorporating bit interleaving. We derive here the closed form expressions for the average bit error rate (ABER) of rotated PSK modulation over frequency non-selective slowly Rayleigh fading channel using moment generating function (MGF) based approach. Numerical results are obtained to compare th...

The mobile wireless channel a ords inherent diversity to combat the e ects of fading. Existing code division multiple access (CDMA) systems, by virtue of spread-spectrum signaling and RAKE reception, exploit only part of the channel diversity via multipath combination. Moreover, their performance degrades under fast fading commonly encountered in mobile scenarios. In this paper, we develop new ...

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...

Interference avoidance for multiaccess fading channels is considered in the paper. Slowly varying (quasistatic) and rapidly varying (dynamic) frequency selective fading channels are considered. For the former application of interference avoidance is straightforward, while for the latter interference avoidance is applied to the average channel.

In contrast to the common opinion, that CDMA offers only advantages to overcome frequency{selective fading, in this paper, it is shown that CDMA can combat log{normal fading (long{term fading), too. This statement holds under the following two conditions: First, equal transmission rates for all users are presupposed. Second, interference cancellation is applied to combat multiple access interfe...

In this paper, we use the selective combining diversity over Rayleigh fading channel is presented. Different diversity techniques are available in the literature. Different techniques behave differently with different coding techniques. Here, diversity analysis of the Rayleigh fading channel is presented in Space time block codes (STBC). We are using the system model of the space time block cod...

Multi-user single-carrier (SC) MIMO multiplexing has been attracting a lot of attention due to its low peak-to-average power ratio (PAPR). As the transmission rate increases, the channel becomes frequency-selective and the bit error rate (BER) performance degrades significantly due to intersymbol interference (ISI). Frequency-domain equalization (FDE) provides a good BER performance since the f...