We present measurements of anisotropy in the cosmic microwave background (CMB) from the first season of observations with the Degree Angular Scale Interferometer (DASI). The instrument was deployed at the South Pole in the austral summer 1999–2000, and we made observations throughout the following austral winter. We present a measurement of the CMB angular power spectrum in the range 100 < l < ...

Time variable electricity tariffs have been introduced in many countries to properly price the cost of electricity generation over changing demand at different times of the day. In Ireland, the All Island Electricity Market (http: //allislandmarket.com) generates a whole-sale market price in half hour time slots, with prices sometimes varying by a factor of three between peak and nonpeak period...

We consider the single-user computational cut-off rate for the complex Rayleigh flat fading spatio-temporal channel under a peak power constraint. Determination of the cutoff rate requires maximization of an average error exponent over all possible space-time codeword probability distributions. This error exponent is monotone decreasing in a measure of dissimilarity between pairs of codeword ma...

Long Term Evolution (LTE) uses single carrier frequency division multiple access (SCFDMA) technique as the multiple access scheme in the uplink, due to its low peak to average power ratio (PAPR) compared to orthogonal frequency division multiple access (OFDMA). This advantage is achieved when the Resource Blocks (RBs) allocated to a user are contiguous in frequency domain. Considering this cons...

In view of the cognitive radio network more groups of multicast, this paper proposes a multicast group matching based on collaboration between groups of information transmission mechanism. We formulate an overall rate optimization problem based on relay location and primary user (PU) location with interference constraints to the PU and peak power constraint of each user and obtain the optimal s...

A coding scheme for transmission of a bit maps given to sequence channel inputs (called the codeword associated with transmitted bit). In this paper, we study problem designing best code discrete Poisson memory (under peak-power and total-power constraints). The outputs are distributed random variables mean comprising fixed additive noise linear combination past input symbols. Assuming maximum-...

Efficiently allocating the scarce and expensive radio resources is a key challenge for advanced radio communication systems. To this end, cognitive radio (CR) has emerged as a promising solution which can offer considerable improvements in spectrum utilization. Furthermore, cooperative communication is a concept proposed to obtain spatial diversity gains through relays without requiring multipl...