Abstract—In this paper, a design of H.263 based wireless video transceiver is presented for wireless camera system. It uses standard WIFI transceiver and the covering area is up to 100m. Furthermore the standard H.263 video encoding technique is used for video compression since wireless video transmitter is unable to transmit high capacity raw data in real time and the implemented system is cap...

This paper proposes a cooperative communication scheme for improving wireless communication performance. By the distance of between transmitter and receiver, the signal from the transmitter is distorted for various reasons such as inter-cell interference (ICI), power reduction, incorrect channel estimation. In order to solve problems, the proposed scheme uses the relay. By the relay, the commun...

there was a rapid development in wireless network area focusing on high speed and long range application. For this purpose Zigbee technology was developed. Zigbee based devices operates usually three bands i.e. 868 MHz, 915 MHz, and 2.4 GHz. This paper explore about several blocks of transmitter using VHDL. The transmitter consist of CRC(cyclic redundancy check), Bil-to-Symbol block, symbol-to-...

We attempt to improve the performance of an existing wireless packet transmission system that uses coding and transmitter diversity. We view it as a concatenated system, system constructed by “concatenationn of encoding blocks and interleavers a t the transmitter. The transmitter structure is improved using a better interleaving scheme, the receiver architecture by applying a n iterative decode...

Radio transmissions traditionally use one antenna at the transmitter and one antenna at the receiver. This system is termed Single Input Single Output (SISO). Both the transmitter and the receiver have one RF chain (that's coder and modulator). SISO is relatively simple and cheap to implement and it has been used age long since the birth of radio technology. It is used in radio and TV broadcast...

A cost effective ZigBee-based wireless parking sensor system is presented in this article. Ultrasonic transmitter and receiver are used for distance measurement. An evaluation, control and wireless data transfer are realized by one chip Panasonic hybrid chip PAN4450 (8-bit microcontroller + IEEE 802.15.4 radio). System consists of four independent distance sensors and one central display and co...

The multipath-rich wireless environment associated with typical wireless usage scenarios is characterized by a fading channel response that is timevarying, location-sensitive, and uniquely shared by a given transmitter-receiver pair.We review the PHYlayer security algorithms whose function is based on neural networks. Specifically, we studied a full key exchange scheme which includes channel sa...

Due to imperfections in transmitters' hardware, wireless signals can be used verify their identity an authorization system. While deep learning was proposed for transmitter identification, existing work has mainly focused on classification among a closed set of transmitters. Malicious transmitters outside this will misclassified, jeopardizing the In article, we formulate problem recognizing aut...

The IEEE802.11a Wireless LAN standard defines a high system performance and therefor requires a certain signal accuracy for the OFDM transmitter output. Taking the potential analog low, medium IF and RF filter imperfections into account it is necessary to pre-equalize the signal stream digitally before transmitting. The paper will concentrate on the description and comparison between different ...