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In the present wireless scenario, transmit diversity has become one of the key contributing technologies. Analytical estimations of bit error rate (BER) can be obtained with space time transmit diversity (STTD). The desired user's BER performance improves as fading of interfering signal decreases. Nakagami-m fading is becoming more prevalent in performance analysis and other studies related to mobile...
Multi-protocol label switching (MPLS) is rapidly emerging technology, which plays a key role in next generation networks by delivering QoS and traffic engineering features. MPLS is helpful in managing traffic when some links or paths are under and/or over utilized. In MPLS a look - up in switching table is certainly less complex and time consuming than a corresponding routing table look - up in an...
Ad hoc wireless networks provide infrastructure-free communication, an efficient MAC protocol through which mobile stations can share a common broadcast channel is essential. Present medium access mechanism used are Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA), multiple access with collision avoidance (MACA) and CSMA/CA with RTS/CTS. These protocols are designed to reduce the collision...
Hidden node is a fundamental problem that affects any wireless network where nodes cannot hear each other and leads to data packet collision. IEEE 802.11 wireless networks employ RTS/CTS mechanism for avoiding DATA packet collision .The main design assumption in this method is that all the nodes in the vicinity of a sender and a receiver must hear the RTS and CTS packets. They also defer their transmission...
With the growing interest in integration of voice, data and video traffic in wireless communication networks, CDMA emerged as an attractive access technique. The performance of wireless system is deteriorated in presence of multipath fading environment. Hence, the error performance analysis is a fundamental requirement to deploy CDMA system. The Bit Error Rate (BER) is one of the error performance...
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