Abstract: The Finite Impulse Response (FIR) filter is a digital filter widely used in Digital Signal Processing applications in various fields like imaging, instrumentation, communications, etc. Programmable digital processors signal (PDSPs) can be used in implementing the FIR filter. However, in realizing a large-order filter many complex computations are needed which affects the performance of the common digital signal processors in terms of speed, cost, flexibility, etc. By using Kaiser window attempt is made to reduce the sidelobe level & control by modifying nth order Bessel function I0(x)& controlling the shape factor by adjustable parameter α. Few dB sidelobe level response is also reduced. In this paper the design of digital FIR filter has been discussed.

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-02-129
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Abstract: Orthogonal Frequency Division Multiplexing (OFDM) is a transmission technique which ensures efficient utilization of the spectrum by allowing overlap of carriers. OFDM is a combination of modulation and multiplexing that is used in the transmission of information and data. Compared with the other wireless transmission techniques like Frequency Division Multiple Access (FDMA), Code Division Multiple Access (CDMA), OFDM has numerous advantages like high spectral density, its robustness to channel fading, its ability to overcome several radio impairment factors such as effect of AWGN, impulse noise, multipath fading, etc. Due to this it finds wide application in Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB), and Wireless LAN.

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-02-131
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