Direct-sequence spread-spectrum (DSSS) receiver using both decision feedback (DFB) and twosided transversal filters for combatting narrowband interference (NBI) is proposed. The receiver is made up of two branches. In the first branch, the conventional demodulator is followed by a DFB filter, while in the second auxiliary branch, a demodulator with the carrier in quadrature is followed by a two...

In this paper a novel transversal split filter configuration is proposed and the split optimum Wiener filter is introduced, as well as the symmetric and antisymmetric linear phase Wiener filter. The approach consists of combining the idea of split filtering with a linearlyconstrained optimization scheme. Then, the continuously split procedure is introduced and the multi-split adaptive filter is...

This paper reports an Ultra wideband pass filter with a center frequency of 3.96 GHz and 3 dB bandwidth of 1584 MHz. The filter design is based on transversal signal interference principle implemented by means of transmission lines.The features of this filter include low insertion loss, sharp rejection along with simple design approach. Also, comparison of simulation and measured filter paramet...

In this paper we have proposed a highly tunable spectrum sliced photonic microwave band pass transversal filter for microwave and millimeterwave frequency applications. This filter configuration is based on two cascaded Fabry-Perot filters with different free spectral range and a broadband optical source. The high tunability of the filter is achieved by carefully choosing free spectral range of...

We derive a new adaptive filtering algorithm called the Instrumental Variable Affine Projection (IVAP) algorithm and give its fast version (FIVAP algorithm). The IVAP algorithm departs from the AP algorithm and uses an IV. The IV process is generated in a way such that the new algorithm combines between the AP and the Fast Newton Transversal Filter (FNTF) algorithms. Simulations show that the I...

An adaptive procedure for removing a multimodal power spectrum using cascaded transversal digital filters is described. Sach section of the c/erall filtfir consists of a second order transversal filter whose zero pair is adaptively adjusted to remove one of the modes of the undesired spectrum. Ihe paper is divided into two sections. The paper first treats the case of an unknown but unimodal pow...

The CCD analog transversal filter Is a tremendously cost-effective component In terms of its simplicity compared to equivalent diqltal hardware. In view of this, the chirp z-transform (CZT) algorithm for performing spectral analysis is ideally suited to ccn implementation because, in this algorithm, the bulk of the computation Is performed in a transversal filter. The CCD CZT has some performan...

This paper describes the first integrated transversal filter for feed-forward equalizers (FFE) operating above 40 Gb/s. Equalization of a 2−1 PRBS over a 9-ft and 6.5-ft cable with SMA connectors is demonstrated on-wafer at 40 Gb/s and 49 Gb/s respectively. The circuit is implemented in a commercial 0.18 μm SiGe BiCMOS process and is based on a differential distributed 7-tap fractionally spaced...

C F N Cowan A CCD-based p1•ogrammable transversal filter is described. The filter incorporates analogue weighting coefficients and multipliers in an econondc structure, suitable fol' high-density integration. The pel'formance of a monolithic~ 64-point prototype device is discussed~ and a 256-point ahip~ which is currently in development~ is reported, The limitations of this structure a1•e consi...

A novel distributed transversal filter technique for code division multiple access systems is proposed. It is observed that the distributed amplifier principle underlying the filter approach enables the generation of multi-gigahertz waveforms with suitable accuracy. The DTF method is considered in the context of phase-addressing code division multiplexing systems. Simulation results based on a ...