This paper summarizes our work adapting a recursive digital resonator for use on sixteen-bit fixed-point hardware. Our modified oscillator is a two-pole filter that maintains frequency precision at a cost of two additional operations per filter sample. The new filter’s error properties are expressly matched to use in the range of frequencies relevant to additive synthesis of digital audio and s...

The problem of approximating a long FIR filter by a reduced-parameter stable pole–zero filter is addressed in this paper. We derive a computationally efficient order-recursive algorithm that achieves this task with high accuracy. Our main emphasis is on applying this algorithm to reduce the implementation complexity of the decision feedback equalizer’s long FIR feedforward and feedback filters ...

In practical application, the statistical characteristics of signal and noise are usually unknown or can't have been learned so that we hardly design fix coefficient digital filter. In allusion to this problem, the theory of the adaptive filter and adaptive noise cancellation are researched deeply. According to the Least Mean Squares (LMS) and the Recursive Least Squares (RLS) algorithms realiz...

This paper summarizes our work adapting a recursive digital resonator for use on sixteen-bit fixed-point hardware. The modified oscillator is a two-pole filter with error properties expressly matched to use in the range of frequencies relevant to additive synthesis of digital audio. We present the algorithm, error analysis, performance analysis, and measurements of an implementation on a fixed-...

In a recent paper by Werter, an unjustified normal frequency distribution is assumed, and then, the resulting error probability is compared with that of the traditional noncoherent frequency shift keying (FSK). However, the traditional FSK demodulators were developed because such a distribution could not be justified. This work presents a more appropriate error probability expression.

In the development of wireless communication system, towards error free coding, turbo coding were effectively been used. Turbo coding has an advantage of error detection based on the parity bit coding which improves the error performance in communication system. In the practical realization of such system, turbo chips were developed embedding onto a communication unit, performing the operation ...

Code Division Multiple Access (CDMA) is a multiple access technique widely used in cellular and military communication systems. In Direct Sequence Spread Spectrum (DSSS) communications, data samples are embedded inside Pseudo Noise code (PN code) prior to transmission. Synchronization of this unique code with the incoming data samples forms an important step in data recovery. Single Dwell Seria...

An adaptive filter is defined as a digital filter that has the capability of self adjusting its transfer function under the control of some optimizing algorithms. Most common optimizing algorithms are Least Mean Square (LMS) and Recursive Least Square (RLS). Although RLS algorithm perform superior to LMS algorithm, it has very high computational complexity so not useful in most of the practical...