This paper investigates the performance of UltraWideband (UWB) correlator receivers for Gaussian monocycles under the condition of equal mean power and provides constructive reference to the selection of pulses. Several channel situations are examined including ideal single user AWGN channel, non-ideal synchronous, multipath fading and multiple access interference. Both numerical and analytical...

A complete detection, channel estimation, synchronization, and equalization scheme for a transmitted reference (TR) ultrawideband (UWB) system is proposed in this paper. The scheme is based on a data model which admits a moderate data rate and takes both the interframe interference (IFI) and the intersymbol interference (ISI) into consideration. Moreover, the bias caused by the interpulse inter...

Abstract __ The ability to capture significant amount of transmitted signal energy present in the resolvable multipaths using only a modest number of rake fingers (correlators) is an important receiver design consideration for ultra-wideband (UWB) and wideband CDMA communication systems. This, however, is achieved at the expense of rake receiver performance. Motivated by this need, several subo...

The performance of a RAKE receiver for a pulse based ultra-wideband (UWB) communications system is studied in a realistic channel model that is based on an extensive set of indoor channel measurements. The RAKE receiver is shown to contribute to a mitigation of the ISI. In particular, at low input SNR values and small number of RAKE taps, it is shown that employing additional RAKE taps for ener...

Software defined radios are widely used as multi-mode and multi-bandRF transceivers for modern communication systems, especially in cognitive radio. However, the design of flexible, cheap, and reconfigurable front-ends is a challenging task in terms of the RF transceiver electronics. Many requirements to the analogue components can be met by today’s technologies, however, this may not always be...

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 d...

A Software Defined Radio (SDR) is a radio receiver and/or transmitter, whose characteristics can to a large extent be defined by software. Thus, an SDR can receive and/or transmit a wide variety of signals, supporting many different standards. In our research, we currently focus on a demonstrator that is able to receive both Bluetooth and HiperLAN/2. This helps us to identify problems associate...

The paper presents the hardware architecture of the Galileo PRS receiver developed within the BaSE project, and describes the core technologies required for using the Galileo PRS service. The approaches for increasing the robustness against radio frequency interference by using single sideband tracking techniques, adaptive notch filtering and pulse blanking are described. The potential of utili...

Wideband code division multiple access (WCDMA), a widely accepted 3G interface, is based on direct sequence (DS) CDMA technology. In this paper, a simulator implemented in Ptolemy software according to the physical layer specification of the WCDMA system is described. This paper is concerned with providing an analysis and simulation scheme to calculate the error probabilities of WCDMA system in...

Two techniques are presented in this paper for a software-defined radio (SDR) receiver robust to out-of-band interference. Voltage gain is realized at IF simultaneously with low-pass filtering to mitigate blockers and out-of-band intermodulation distortion. A 2-stage polyphase harmonic rejection (HR) mixer concept robust to gain error achieves 2-6 HR of more than 60dB for 40 samples without tri...