Spatial filtering using adaptive or smart antennas has emerged as a promising technique to improve the performance of cellular mobile systems. Due to the digital nature of the control of spatial filtering a quantization error is readily present. This is due to the fact that weights and phase information is provided with the aid of finite wordlength processors. This paper presents the developmen...

For the high speed processing of databases, it is fundamental to introduce various VLSI architectures to the processing of basic functions. Especially, sort and batch search requires high speed modules. The VLSI algorithms of them must make use of the time necessary for the transfer of a large amount of data to and from the modules. These modules should be nonprogrammable in order to avoid seri...

This paper presents a method to minimize the nite wordlength error in output signals of linear phase 2-D FIR lters. The nite wordlength errors can easily be analyzed in the frequency domain when the input signal statistics are known. In the case of white input signals, impulse responses corresponding to all levels of input impulses are optimized so as to minimize the errors. A new ROM-based lte...

This paper describes an efficient algorithm for the design of lattice wave digital filters with short coefficient wordlength. The proposed algorithm guarantees that the optimum finitewordlength solution can be found for both the fixed-point and the multiplierless coefficient representations. This is illustrated by means of several examples.

We construct error-correcting (nonlinear) binary codes using a construction of Bose and Chowla in additive number theory. Our method extends a construction of Graham and Sloane for constant weight codes. The new codes improve 1028 of the 7168 best known h-error correcting codes of wordlength ≤ 512 with 1 ≤ h ≤ 14. We give asymptotical comparisons to shortened BCH codes.

A new class of two-channel IIR/FIR filter banks was introduced in [1] with half-band IIR analysis filters and FIR synthesis filters. This type of filter bank features very lowcomplexity analysis filters and simultaneously a low overall complexity. In this paper, we consider finite-wordlength effects of these filter banks.