This work describes the design of a DSP (Digital Signal Processor) based Adaptive Numerical Mho relay, to be used for distance protection schemes of long distance transmission lines. The relay settings will be automatically adjusted with the changes of power system parameters with the variation of frequency as well as with the variation of percentage compensation which may occur due to fault /d...

From practical and theoretical viewpoints, performance analysis of communication systems by using information-theoretic results is important. In this paper, based on our previous work on Multiple Access Channel (MAC) and Multiple Access Relay Channel (MARC), we analyze the impact of a relay on the fundamental wireless communications concept, i.e., coverage region of MARC, as a basic model for u...

Tactical mobile robots used in military and law enforcement operations normally require a robust, long range, and non-line-of-sight communications link to the remote control station. High frequency digital communications, which overcome problems encountered by tethered links and analog radios, are subject to line-ofsight (LOS) limitations. This is often impossible to maintain in urban environme...

Single-relay selection techniques based on the max-min criterion can achieve highest bit error rate (BER) performance with full diversity gain as compared to state-of-the-art single-relay techniques. Therefore, in this work, we propose a modified by considering differences among close value channels of all relays while selecting best relay node. The proposed not only enjoys but also offers sign...

In this channel,we study rate region of a Gaussian two-way diamond channel which operates in half-duplex mode. In this channel, two transceiver (TR) nodes exchange their messages with the help of two relay nodes. We consider a special case of the Gaussian two-way diamond channels which is called Compute-and-Forward Multiple Access Channel (CF-MAC). In the CF-MAC, the TR nodes transmit their mes...