Santu Sardar

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In this paper, we describe an efficient Xilinx Spartan3A DSP implementation of 2D DWT (Discrete Wavelet Transforms) using polyphase filterbank architecture with Distributed Arithmetic (DA) to speedup wavelet computation. Results show that the distributed arithmetic formulation results in a considerable performance gain while reducing the consumption of(More)
In this correspondence we introduce a novel instrumentation strategy which we term as application specific instrumentation (ASIN) and we test the feasibility of the proposed scheme in designing a simulation based breast cancer diagnosis system using ultrawideband (UWB) sensors. Most of the high end instrumentation facilities of the current generation are(More)
Hardware implementation of a real-time, highly accurate face recognition system (FRS) is proposed in this correspondence. Face images are acquired from a CMOS sensor camera connected to Field Programmable Gate Array (FPGA) based reconfigurable hardware board using Cam Link interface. We used contrast limited adaptive histogram equalization (CLAHE) for image(More)
Automated Face recognition is a technique employed in wide-range of practical applications, which include access control, identification systems, surveillance and law enforcement applications to name a few, and future improvements promise to spread the use of face recognition further still. Radial Basis Function Networks (RBFN) have proven effective(More)
In this paper we propose a novel approach for breast tumor diagnosis (detection and volume estimation) using ultrawideband (UWB) radio frequency (RF) sensors in an application specific instrumentation (ASIN) framework, which is also proposed in this paper. In this, the application specific analysis is performed without giving any intermediate output. For(More)
In this paper, based on word-serial pipeline architecture, a new efficient distributed arithmetic (NEDA) technique is introduced. This architecture increases the speed and reduced the time of 2-D discrete wavelet transform (DWT). In this design, word-serial pipeline architecture able to compute a complete 2-D discrete wavelet transforms (DWT) binary tree in(More)
In this paper we implement a turbo based Overlay Cognitive radio Z-channel with Trellis shaping, where the primary and cognitive users transmits and receives concurrently, utilizing the same spectrum. We ensure that bit error rate (BER) performance of the Primary does not degrade even in the presence of cognitive user. We derive bit error rate BER curves(More)
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