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Tag: Interpolation

Spectrum of the cascade of CIC filters with a wideband compensation filter for rate change factor 10, unit differential delay and 4 stages
November 24, 2022 DSP / Wireless/SDR

Cascaded Integrator Comb (CIC) Filters – A Staircase of DSP

In olden days, people used to have lots of kids. A famous Urdu satirist once wrote: "It has been observed

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Multiple paths arriving at the Rx with different strengths and delays
May 9, 2022 Localization

Carrier Phase-Based Ranging in Indoor Multipath Channels

Indoor positioning is one of the core technologies behind the idea of Internet of Things (IoT). Some of the use

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Linear interpolation between pilot subcarriers
July 18, 2022 Wireless/SDR

Channel Estimation in OFDM Systems

Channel estimation in single-carrier systems has been described in a previous article. In OFDM systems, each subcarrier acts as an

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Linear approximation of atan2
June 16, 2023 DSP

3 Ways to Approximate atan2( ) in Hardware

When we think about signal processing, the focus is usually magnitude response of a system. However, in several DSP applications,

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Farrow structure for cubic interpolation
January 11, 2022 DSP

Fractional Delay Filters Using the Farrow Structure

In the discussion on piecewise polynomial interpolation, we emphasized on the fact that the fractional interval $\mu_m$ needs to be

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Wireless Communications from the Ground Up - An SDR Perspective
Learn about Wireless Communications and SDR through great visualizations, simple maths and intuitive explanations
A wireless channel with speakers and microphone
Send and receive wireless signals over the air without expensive SDR hardware through a speaker (Tx) and a microphone (Rx)

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