نتایج جستجو برای: l lter

تعداد نتایج: 620399  

1999
Monisha Ghosh

A new method of co-channel interference rejection for digital television receivers is presented that uses a di erent rejection lter from the comb lter that was used in the prototype built by Zenith. This lter is optimized for rejection of co-channel NTSC interference in the presence of white noise and hence su ers a penalty of only 0.4 dB in AWGN as compared to 3.5 dB with the comb. The receive...

1995
Masoud R. K. Khansari Eric Dubois

We show how the Pad e table can be utilized to develop a new lattice structure for general two-channel bi-orthogonal perfect reconstruction (PR) lter banks. This is achieved through characterization of all two-channel bi-orthogonal PR lter banks. The parameter space found using this method is unique for each lter bank. Similarly to any other lattice structure, the PR property is achieved struct...

1993
Imran A. Shah

| In this paper some new results for multidimensional m-band bi-orthogonal lter banks are presented. In the rst part of the paper we introduce the ladder structure as a method for the design and implementation of aforementioned lter banks. The theory of ladders and the relation to lter banks is presented. The second part of the paper focuses upon linear phase conditions for bi-orthogonal lter b...

Journal: :Schweizerische Ärztezeitung = 2022

1997
Shun Morikawa Keisuke Okada Sumitaka Takeuchi Isao Shirakawa

| A digital lter is one of the fundamental elements in the digital video transmission, and a multiplier acts as the key factor that determines the operation speed and silicon area of the lter. Even though the coe cients to the lter are desired to be programmable, it is possible to change coe cients in the vertical y-back interval of television receivers. This allows the preloadability of coe ci...

1997
Lang Tong Dan Liu

The noise predictive structure of DFE is attractive for the equalization of the coded modulation signals. In this paper, a blind predictive constant modulus (CM) decision feedback equalizer (PCM-DFE) is presented and analyzed. The PCM-DFE employs the CM linear equalizer as its forward lter and a feedback lter that optimizes the CM cost of the decision variable. It is shown that for any xed forw...

Journal: :Journal of Circuits, Systems, and Computers 2010
Takaaki Hirai Tetsuya Asai Yoshihito Amemiya

A CMOS phase-shift oscillator that uses a phase shift in the conduction of heat is proposed. The oscillator consists of an inverting ampli ̄er and a feedback thermal ̄lter that are integrated on a silicon chip. The thermal ̄lter consists of a polysilicon heater and a MOSFET thermosensor separated from each other by a SiO2 heat-conducting layer. 1 An input signal for the ̄lter travels from the heate...

1999
Jyri Huopaniemi Nick Zacharov Matti Karjalainen

In this paper, the problem of modeling head-related transfer functions (HRTFs) is addressed. Traditionally, HRTFs are approximated in real-time applications using minimum-phase reconstruction and various digital lter design techniques, yielding FIR or IIR structures. In this work, binaural auditory modeling has been applied to HRTF analysis and lter design methods have been compared from the au...

2007
R. Tanner D. G. M. Cruickshank

This paper presents a receiver lter, based on V olterra functions, for a direct-sequence code-division-multiple-access (DS-CDMA) system. The envisaged application would be cellular tele-phony, where the receiver will be required to be adaptive due to changes to the channel characteristics. The results obtained from the V olterra lter are compared against the linear minimum-mean-square-error (MM...

1995
J Villasenor B Belzer J Liao

k Re[a k ] Im[a k ] Total length = 14, a k = a 10k 6 length, orthogonality, and image quality. [10] D. Le Gall and A. Tabatabai, \Subband coding of digital images using symmetric short kernel lters and arithmetic coding techniques," Proc. ICASSP '88, pp. 761-5, 1988. 5 comparison, the 9-tap/7-tap biorthogonal lter discussed in [2] had a mean PSNR of 29.67 dB and the well-known 5-tap/3-tap biort...

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