Prepared by:
Khaizuran Abdullah
Zahir M. Hussain


Abstract

Comparative studies on DWT-OFDM and FFTOFDM systems are presented. The model for DWT-OFDM includes zero-padding and vector transpose for transmitting the OFDM signal. MATLAB simulation commands are also described. The discrete wavelet transform-OFDM (DWT-OFDM) has to satisfy the orthonormal bases and the perfect reconstruction properties to be considered as wavelet transform. Different wavelet families have been used and compared with the conventional ....etc

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By
JOSHI G



Abstract

The demand for high-speed mobile wireless communications is rapidly growing.
OFDM technology promises to be a key technique for achieving the high data capacity and spectral efficiency requirements for wireless communication systems of the near future. This work presents an investigation into methods for maximizing the spectral efficiency of Orthogonal Frequency Division Multiplexing (OFDM) systems. The current standards such as IEEE 802.11a in USA and ....etc

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Abstract
In the majority of digital signal processing (DSP) applications the critical operations
are the multiplication and accumulation. Real-time signal processing requires high speed
and high throughput Multiplier-Accumulator (MAC) unit that consumes low power, which
is always a key to achieve a high performance digital signal processing system. The
purpose of this work is, design and implementation of a low power MAC unit with block
enabling technique to save power. Firstly, a 1-bit MAC unit is designed, with appropriate
geom ....etc

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hi,
this is jyothi
i need ppt on implementation of vlsi design using ofdm
please send me regarding this topic ....etc

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Chapter 1
INTRODUCTION
Secrecy is certainly important to the security or integrity of information transmission. Indeed, the need for secure communication is more profound than ever, recognizing the fact that conduct of much of our commerce, business and personal matters is ever being carried out today through the medium of computers, which has replaced the traditional medium computers.
Recently, the number of individuals and organizations using wide computer networks for personal and professional activities h ....etc

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Abstract
This paper presents an efficient implementation of a convolution-based 1D discrete wavelet transform (DWT). The proposed architecture combines several optimizations that improve the performance of the hardware design in terms of throughput and power dissipation. We designed and analyzed the performance of numerous DWT architectures using pertinent metrics and cost functions that assess the impact of the design optimizations. We synthesized our VLSI architectures using a 0.18μ standard cell library. The final VLSI design combi ....etc

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Watermarking is used to embeds data(a watermark) into a multimedia object for its copyright protection. The watermarks can be perceptible where it can be seen to the user on careful inspection.In the imperceptible case, the watermark cannot be decoded without an appropriate decoding mechanism. The process of embedding a watermark in an image is a computationally intensive task. The implementation in hardware can significantly speed up this task.A new
VLSI architecture for implementing two different visible watermarking
schemes for images is ....etc

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VLSI DESIGN & IMPLEMENTATION OF ELECTRONIC AUTOMATION USING VHDL
In this project of “VLSI design and implementation of Electronic Automation using VHDL ” we design a complex digital circuit using the language VHDL (Very High Speed Integrated Circuit Hardware Description Language).
As it is not possible to design such a complex digital circuit (consisting of more than 30,000 logic gates) manually to implemen t the above application, we use VLSI Technology for the solution.
With this technol ....etc

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Abstract”

Fourphase codes have been widely used in radar and communication areas, but the synthesis of Four phase codes with good merit factor is a nonlinear multivariable optimization problem, which is usually difficult to tackle. To get the solution of above problem many global optimization algorithms like genetic algorithm, simulated annealing, and tunneling algorithm were reported in the literature. However, there is no guarantee to get global optimum point. In this paper, a novel and efficient VLSI architectu ....etc

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This article describes the implementation of A minimal neuron model, the Morris-Lecar model. It is is implemented on field programmable analog arrays (FPAAs). The work involves solving the differential equation describing the model. It is done in a way similar way a computer solves the same problem: numerically integrate the differential equation The approach here is to The arithmetic operations are performed on the voltage mode circuits of the FPAAs.This neuron is limited by the limitations on the configurability of the FPAAs. Similar models ....etc

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