Abstract
Ultra-wideband is a technology that can be use at very low energy levels for short-range high bandwidth communications by using a large portion of the radio spectrum. In this paper we is specifically focused on the performance of software radio transceiver design for impulse-based UWB with the ability to transmit a raw data rate of 100 Mbps yet encompasses the adaptability of a reconfigurable digital receiver. To complete the analysis we introduce a transmitter and receiver of pulse based ultra wideband modulation. Direct sequence spread spectrum has become the modulation method of choice for wireless local area networks, and personal communication systems, because it's numerous advantages such as jammer suppression, code division multiple access, and ease of implementation. Again spread spectrum techniques are most favourable for indoor communication needs and digital radio links, where most of the applications are found. We also observe its characteristics and complete the modulation techniques. Finally we examine UWB communication systems paying particular attention to transmitter and receiver design. Index Terms—Code division multiple access (CDMA). direct sequence spread spectrum (DSSS), personal communication systems (PCS), ultra-wideband (UWB), wireless local area networks (WLAN's).
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