Recently we have developed an efficient flexible multirate signal processing structure with high oversampling ratio and adjustable fractional or irrational sampling rate conversion factor. One application area is a multistandard communication receiver which should be adjustable for different symbol rates utilised in different systems. The proposed decimation filter consists of parallel CIC (cas...

The evolution towards applications with increasing functionalities leads to the need of high flexible systems that support a high number of different standards while decreasing the required hardware space. Therefore a high configurable platform being able to handle a multitude of standards is needed. One main issue is the tradeoff between performance and space consumption. We present a generic,...

In this paper we propose an arithmetic transformation of firstorder allpass lattice wave digital filter sections implemented with bit-parallel, carry-save arithmetic which increases the maximum sample rate. Such filter sections are the critical component of bireciprocal lattice wave digital filters which are efficient filter structures for sample rate conversion with factors of two. The propose...

The maximum achievable data-rate of a quantum communication system can be critically limited by the efficiency and temporal resolution of the system's single-photon detectors. Frequency up-conversion technology can be used to increase detection efficiency for IR photons. In this paper we describe a scheme to improve the temporal resolution of an up-conversion single-photon detector using multi-...

This contribution deals with the design of a fully digital multi-rate receiver, operating on non-synchronized bandpass samples. Issues related to aliasing, sample rate conversion and timing correction are considered. We compare various receiver alternatives in terms of the BER degradation caused by aliasing and non-ideal timing correction. In particular, we focus on a low-complexity receiver pe...

Signal processing methods have changed substantially over the last several decades. In modern applications, an increasing number of functions is being pushed forward to sophisticated software algorithms, leaving only delicate finely-tuned tasks for the circuit level. Sampling theory, the gate to the digital world, is the key enabling this revolution, encompassing all aspects related to the conv...

The main focus in this thesis is on the aspects related to the implementation of integer and non-integer sampling rate conversion (SRC). SRC is used in many communication and signal processing applications where two signals or systems having different sampling rates need to be interconnected. There are two basic approaches to deal with this problem. The first is to convert the signal to analog ...

A method of articulatory synthesis using a vocal-tract model with variable length is proposed. The vocal-tract length is derived prior to the unique determination of vocal-tract area parameters incorporated with a codebook that maps formants to vocal-tract length is used. A two-dimensional interpolation function for irregularly spaced data is conducted to confine vocal-tract length in the first...

1. INTRODUCTION In multistandard receivers, the hardware should be configurable or programmable for the reception of different types of signals having different symbol rates. After the AD conversion, utilizing commonly the delta-sigma AD-conversion principle and high oversampling ratio, the sampling rate is reduced to be a low integer multiple of the symbol rate. In this decimation, the desired...