Dear candidates you will find MCQ questions of Communication Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: there are a number of techniques for decoding convolution codes. the most important of these methods is viterbi algorithm. other decoding algorithms for convolutional codes are fano’s sequential coding, stack algorithm and feedback coding.
Explanation: fano’s algorithm searches for the most probable path through the trellis diagram by examining one path at a time. the error rate performance of fano’s algorithm is comparable to viterbi’s algorithm.
Explanation: in comparison to viterbi decoding, sequential decoding has a significantly larger delay. in advantage over viterbi decoding is that it requires less storage, and thus codes with larger constraint lengths can be employed.
Explanation: in comparison to fano’s
Explanation: there are three basic types of error correction and detection codes. they are block codes, convolutional codes and turbo codes. a channel coder operates on digital message data by encoding the source information into a code sequence.
Explanation: fano’s algorithm involves sequential decoding. it searches for the most probable path through the trellis by examining one path at a time.
Explanation: in viterbi’s algorithm, the selected paths are regarded as survivors. the path thus defined is unique and corresponds to the decoded output.
Explanation: random signals cannot be predicted whereas pseudorandom sequence can be predicted.
Explanation: the three basic properties that can be applied for pseudorandom sequence are balance, run and correlation properties.
Explanation: the shift register operation is controlled by clock pulses.
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