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Cognitive radio technology is an emerging technology which is very promising and hence is being developed at a rapid rate. In Multi Input Multi Output Cooperative Cognitive Radio Networks (MIMO-CCRN) primary users (PUs) recruit some secondary users (SUs) to cooperatively relay the primary traffic. Considering networks with heterogeneous services, it will be(More)
An adaptive beam former is a device, which is able to steers and modifies an array's beam pattern in order to enhance the reception of a desired signal, while simultaneously suppressing interfering signals through complex weight selection. However, the weight selection is a critical task to get the low Side Lobe Level (SLL) and Low Beam Width. It needs to(More)
Ultimate aim of authors is to implement a high energy efficient data transmission protocol for Mobile Adhoc Networks (MANET) which prolongs the life time of network in a significant way. MANET devices mainly depend on a limited battery power supply to maintain the network with low power consumption techniques by utilizing the available protocol algorithms(More)
This paper presents a new approach to maximize the dispersion-limited distance of vertical cavity surface emitting lasers (VCSELs) operating at 1550. 127 nm with 10 Gb/s bit rate. Optical non return to zero (NRZ) signal is generated by using an optical band pass filter (OBPF) along with Mach-Zehnder interferometer (MZI) at the output of VCSEL. A third order(More)
Polarization mode dispersion in single mode fibers occurs due to random birefringence which results in propagation of soliton pulse with the emission of dispersive waves. Due to these dispersive waves soliton pulse loses its energy and gets broadened during the transmission along the fiber. This paper examines a solution to this problem, which uses(More)
Wavelet based compression is mostly utilized to compress the videos. Most of the wavelet-based compression techniques first determines the coefficients and then performs a threshold-based operation to obtain the compressed video. In such works, there is a lack of analysis in selecting an appropriate threshold value. To overcome such drawback presented in(More)
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