In this paper, both the security and the reliability performance of the cognitive amplify-and-forward (AF) relay system are analyzed in the presence of the channel estimation error. The security and the reliability performance are represented by the outage probability and the intercept probability, respectively. Instead of perfect channel state information (CSI) predominantly assumed in the lit...

State Sstimation over Fading Channels: Outage and Diversity Effects Kimmo Kansanen Department of Electronic and Telecommunications, Norwegian University of Science and Technology (NTNU), Norway Uncoded (analog) transmission of a scalar first-order Gauss-Markov process over fading channels is considered. This model is applicable in real-time applications and for settings such as wireless sensor ...

An analytical approach to the performance analysis of the V-BLAST algorithm is discussed in this paper. It is based on closed-form analytical models of the three key algorithm components: interference cancellation, interference nulling and optimal ordering. The closed-form analytical model of the GramSchmidt orthogonalization process is a key component of the proposed analysis method. It allows...

The α-μ distribution is a generalized fading distribution which explores nonlinearities of the wireless propagation medium. This distribution includes the other distributions such as Gamma, Nakagami, exponential, Gaussian, Rayleigh etc. This makes α-μ distribution very interesting. In this paper probability density function and performance metrics such as outage and bit error rate of α-μ distri...

We present an approach to defining probability of outage as a system-wide QoS measure for cellular systems. We describe how to use this approach to define an admission region where the requirements on probability of outage are satisfied. We illustrate the approach by constructing the aforementioned admission region for a few examples.

This paper investigates the outage performance of an energy-harvesting(EH) relay-aided cooperative network, where the source node transmits information to its destination node with the help of multiple energy-harvesting cooperative nodes. For such a system, we derive an explicit closed-form expression of outage probability over Nakagami-m fading channels, where the on-off EH model is considered...

Level crossing rate, outage probability and average time of fade duration of the SSC combiner output signal are determined in this paper. Log-normal fading at the input is present. The results are shown graphically for different variance values, decision threshold values and fading parameters values. Key-Words: Diversity reception, Fade Duration, Level Crossing Rate, Log-normal fading, Outage P...

This paper derives an optimum relay position of amplify-and-forward (AF) cooperative communications with the differential transmission. As a performance benchmark, we utilize the probability of outage, which is defined as a probability that the instantaneous signal-tonoise power ratio (SNR) becomes lower than a certain threshold. The optimum relay position is found based on the theoretical expr...

We prove both the outage theorem and its converse for block fading discrete memoryless channel. If Pout is the outage probability for the rate R, then any transmission rate below R, together with any average error probability greater than Pout is achievable. Conversely, for any code with rate slightly greater than R, the error probability is greater than any number smaller than Pout, for large ...

We derive the outage capacity regions of fading broadcast channels for code-division (CD), time-division (TD) and frequency-division (FD), assuming that both the transmitter and the receivers have perfect channel side information. The zero-outage capacity regions and the associate optimal resource allocation policies are obtained for CD with and without successive decoding, for TD and for FD. W...