We have developed a radio frequency antenna demonstrator kit as microcontroller based wireless equipment. This system is hybrid combination of software and hardware. study focuses on the demonstration regarding transmitting receiving signals using nRF24L01 device in conjunction with PCB Antenna which are inverted F antenna, connected small piece wire AN043 antenna. To analyze performance this a...

In this paper, we investigate how to design effective strategy to improve the transmission data rate for highspeed railway mobile communication system with fountain codes. We consider a cooperative multi-relay architecture, where each relay is equipped with one antenna and the destination is with multiple antennas deployed. To this end, a new information receiving method at the destination is p...

In this study, the modified Cramér-Rao lower bounds (MCRLBs) on the joint estimation of target position and velocity is investigated for a universal mobile telecommunication system (UMTS)-based passive multistatic radar system with antenna arrays. First, we analyze the log-likelihood redfunction of the received signal for a complex Gaussian extended target. Then, due to the non-deterministic tr...

This paper describes further efforts towards antenna geometry estimation in the WPI Precision Personnel Locator system, which is under development as a portable, zero-fixedinfrastructure, and spectrally compliant RF-based system for location and tracking of personnel situated in indoor environments. The system consists of transmitters worn by individuals to be tracked, and receiver hardware whi...

The outstanding traffic growth of wireless communication network rises both the insufficient network capacity and extreme carbon release. The demerits of long-distance wireless communication system are, limited available frequency, channel capacity, bandwidth, complexity, reliability, transmission dada rate etc. Multiple – input multiple output (MIMO) can improve the spectral efficiency (SE) jo...

A novel planar circular Apollonian fractal shaped UWB monopole antenna with band rejection capability is presented in this paper. The antenna performs satisfactorily in the frequency range 1.8–10.6GHz which gives a wide impedance bandwidth of 142% for VSWR within 2. The proposed antenna has the capability to reject the frequency band 5.125–5.825GHz assigned for IEEE802.11a and HIPERLAN/2. This ...