What are taps in equalizer?
one tap equalizer is just a delay line and gain and is used for equalization of freq. flat channels.
What is transversal FIR filter?
Finite Impulse Response Digital Filters 5.1. , finite-impulse-response (FIR) digital filter. For FIR filters, direct-form I and direct-form II are the same (see Chapter 9). Figure 5.5 gives the signal flow graph for a general causal FIR filter Such a filter is also called a transversal filter, or a tapped delay line.
What is the impulse response of a FIR filter?
Impulse Response – The “impulse response” of a FIR filter is actually just the set of FIR coefficients. Tap – A FIR “tap” is simply a coefficient/delay pair. Multiply-Accumulate (MAC) – In a FIR context, a “MAC” is the operation of multiplying a coefficient by the corresponding delayed data sample and accumulating the result.
How are FIR filters used to reduce sampling rate?
By multi-rate, we mean either “decimation” (reducing the sampling rate), “interpolation” (increasing the sampling rate), or both. Whether decimating or interpolating, the use of FIR filters allows some of the calculations to be omitted, thus providing an important computational efficiency.
How is loss suppressed in a digital FIR equalizer?
•The loss in the channel is suppressed by boosting the high-frequency content of the signal. •Often results in larger noise margins. •Receivers can be implemented in discrete-time or continuous time. •Implementations include digital FIR equalizer, analog FIR equalizer, continuous time equalizer.
Why are FIR filters used instead of IIR filters?
Whether decimating or interpolating, the use of FIR filters allows some of the calculations to be omitted, thus providing an important computational efficiency. In contrast, if IIR filters are used, each output must be individually calculated, even if it that output will discarded (so the feedback will be incorporated into the filter).