What is tail biting convolutional code?

Tail-biting convolutional coding is a technique of trellis termination which avoids the rate loss incurred by zero-tail termination at the expense of a more complex decoder [ 1 ].

Which decoding method involves the evaluation by means of Fano algorithm?

sequential decoding
Which decoding method involves the evaluation by means of Fano’s algorithm? Explanation: Fano’s algorithm involves sequential decoding.

What is Viterbi decoding scheme?

Viterbi Algorithm. • Involves coding data, adding noise, and decoding. – Deliberate encoding: convolutional or trellis codes. – Unintentional encoding: intersymbol interference. • Output is an estimate of the original data.

What are tail bits?

Tail bits enable to end the convolutional encoder in a known state (all-zeros state) and thus to avoid that last bits of the code block are significantly less protected than the others. The first bits are also more protected than the others since the convolutional coder begins in a known state.

Where are convolutional codes used?

The convolutional coding has been one of the most widely used error corrections in digital wireless communication. Therefore, the Viterbi decoding algorithm must be implemented efficiently in a pipelined/systolic fashion.

What is the code rate of a convolutional encoder?

binary convolutional code can be generated with code rate r ≈ (k/n) by using k shift registers, n modulo-2 adders, an input multiplexer, and an output multiplexer. An example of a convolutional encoder with constraint length = 3 and rate = 1 / 2 is the one shown in Figure 2.

Which coding method uses entropy coding?

Lossy source coding
Which coding method uses entropy coding? Explanation: Lossy source coding uses entropy coding.

What is Viterbi used for?

Originally conceived by Andrew Viterbi as an error-correction scheme for noisy digital communication, the Viterbi algorithm provides an efficient method for Forward Error Correction (FEC) that improves channel reliability.

What is tail-biting convolutional coding?

Tail-biting convolutional coding is a technique of trellis termination which avoids the rate loss incurred by zero-tail termination at the expense of a more complex decoder [ 1 ]. The example uses an ad-hoc suboptimal decoding method for tail-biting decoding and shows how the encoding is achieved for a feed-forward encoder.

Does ad-hoc tail-biting improve the performance of Zero-Tailed convolutional code?

As the figure shows the ad-hoc tail-biting decoding scheme performs comparatively close to the lower bounded performance of the zero-tailed convolutional code for the chosen parameters.

What is trellis termination in convolutional coding?

Terminating the trellis of a convolutional code is a key parameter in the code’s performance for packet-based communications. Tail-biting convolutional coding is a technique of trellis termination which avoids the rate loss incurred by zero-tail termination at the expense of a more complex decoder [ 1 ].