The memoryless noncoherent single-input single-output (SISO) Rayleigh-fading channel is considered. Closed-form expressions for the mutual information between the output and the input of this channel when the input magnitude distribution is discrete and restricted to having two mass points are derived, and it is subsequently shown how these expressions can be used to obtain closed-form expressi...

A general, asymptotic (high signal-to-noise (SNR)) error analysis is introduced for quadratic receivers in frequency-flat and multipath Rayleigh-fading channels with multiple transmit and receive antennas. Asymptotically tight expressions for the pairwise error probabilities are obtained for coherent, noncoherent, and differentially coherent space–time receivers. Not only is our unified analysi...

In this paper, a novel noncoherent decision{feedback equalization (NDFE) scheme for M{ary di erential phase shift{keying (MDPSK) signals transmitted over intersymbol interference (ISI) channels is presented. A suboptimum version with lower computational complexity and a noncoherent linear equalizer (NLE) are derived from the original NDFE scheme. Furthermore, the relation of the novel NLE to a ...

In this paper, trellis-coded M-ary CPFSK with noncoherent envelope detection and adaptive channel equalization are investigated to improve the bit error rate (BER) performance of microcellular digital wireless communications systems. For the same spectral efficiency, the trellis-coded modulation (TCM) schemes studied outperform minimum shift keying (MSK) with noncoherent or differentially coher...

Cross sections resulting from scattering that proceeds via an intermediate resonance are shown to be exceptionally controllable using a coherent superposition of only two initial states. Full quantum computations on F+HD(v=0;j=0,1)-->H+DF, D+HF, which exhibits a resonance in one of the reactive channels, support the formal arguments, showing that control is indeed vast. In this case the ratio o...

We consider the application of distributed space-time coding in wireless sensor networks (WSNs). In particular, sensors use a common noncoherent distributed space-time block code (DSTBC) to forward their local decisions to the fusion center (FC) which makes the final decision. We show that the performance of distributed space-time coding is negatively affected by erroneous sensor decisions caus...

Digital European Cordless Telecommunication (DECT), as a standard for cordless indoor wireless communication in Europe, is widely used in hospitals, offices and factories. But its performance can be constrained by channel dispersion, and this can limit the use of DECT system in reflective environments. In this master thesis project, non-coherent equalization schemes are investigated. Different ...

We consider transmission using transmit and reception using receive antennas in a wireless environment assuming that neither the transmitter nor the receiver knows the channel coefficients. For the scenario that the transmission employs noncoherent unitary space–time codes and for a block-fading channel model where the channel is static during channel uses and varies from channel uses to the ot...

| Power and bandwidth eÆcient noncoherent transmission over frequency non-selective Ricean fading channels is studied. We propose a remarkably low-complexity receiver structure which is very well suited to mobile communication scenarios with time-variant and nonstationary transmission channels. Applying bit-interleaved coded modulation with standard convolutional codes, substantial gains of sev...

GPS signal detection using hypothesis testing analysis are given by using the generalized likelihood ratio test (GLRT) approach, applying the model of intermediate frequency (IF) GPS signal of one satellite in white Gaussian noise. The test statistic follows central or noncentral F distribution and is nearly identical to central or noncentral chi-squared distribution because the processing samp...