The development of wireless communication systems into multi-standard radio architectures that can process a multitude of frequency bands and modulation schemes has lead to a growing demand for wideband receiver front-ends. To allow for portability and low cost, these new architectures also need to be low power, compact size integrated circuits with a higher degree of components integrated on c...

The development of wireless communication systems into multi-standard radio architectures that can process a multitude of frequency bands and modulation schemes has lead to a growing demand for wideband receiver front-ends. To allow for portability and low cost, these new architectures also need to be low power, compact size integrated circuits with a higher degree of components integrated on c...

This paper demonstrates optimum receiver performance in terms of bit error rate (BER) for time hopping pulse position modulation (TH-PPM) ultra wideband (UWB) system in multiple user interference environment for indoor radio communication. Equal gain combining and selective gain combining have been demonstrated in terms of ideal RAKE (ARAKE), selective RAKE (SRAKE) and partial RAKE (PRAKE) rece...

— An average Transmitted-Reference (TR) receiver scheme based on orthogonal codes is proposed for improving the bit error rate (BER) performance and the transmitting rate of Ultra-wideband (UWB) TR receiver systems in coal mine. Orthogonal codes are used for modulating the reference pulses and the data pulses in each frame of every bit. Since the orthogonality of the two codes, the inter-pulse...

Time-hopping combined with pulse position modulation has been the original proposal for ultra-wideband systems. Spread spectrum techniques for multiple access and interference suppression are being considered for ultra-wideband radio systems. A digital impulse radio receiver using direct-sequence spreading is proposed in the paper and the signal processing scheme is investigated. Performance me...

Wideband AWGs are commonly used for simulating signal scenarios for receiver testing and transmitter upconversion blocks. The wideband AWG's ability to generate arbitrary signals is important in aerospace and defense and emerging communications where a wide range of signal formats are used. Many of these are either proprietary or do not comply with any accepted commercial standard. In addition,...

This paper focuses on the use of an equalization-based receiver for WCDMA (Wideband Code-Division Multiple Access) in an inter-cellular environment, for handover studies. The receiver is based on the MMSE (Minimum Mean Square Error) algorithm and uses the UMTS (Universal Mobile Telecommunications System) HSDPA (High Speed Downlink Packet Access) standard as a basis, alongside the reference UMTS...

Wireless telephone speech is usually limited to the 300 − 3400Hz band, which reduces its quality. There is thus a growing demand for wideband speech systems that transmit from 50Hz to 8000 Hz. This paper presents an algorithm to generate wideband speech from narrowband speech using as low as 500 bits/s of side information. The 50 − 300Hz band is predicted from the narrowband signal. A sourceexc...

In this paper, we propose a new differential semi-blind spatial-temporal beamforming receiver for asynchronous direct sequence wideband code division multiple access (DS-WCDMA) systems. The new receiver presents improved robustness to phase variations and reduction of the effects of nonlinear distortion.

The optimal receiver for an ultra-wideband transmitted reference (UWB TR) system in a single user multipath environment is derived, based on knowledge of channel properties. The performances of this optimal receiver and other crosscorrelation receivers are analyzed and compared. The usual crosscorrelation receiver which is often used in UWB TR systems is shown to be suboptimal. In addition, an ...