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Questions and Answers
What is the main advantage of convolutional codes in noisy environments?
What is the main advantage of convolutional codes in noisy environments?
- They have low bandwidth efficiency
- They require considering multiple input bits simultaneously
- They are complex to implement
- They offer good performance in noisy environments (correct)
What is a generator polynomial used for in communication systems?
What is a generator polynomial used for in communication systems?
- To generate random bits for encryption
- To add noise to the transmitted data
- To create the code transmitted over a communication channel (correct)
- To simplify encoding and decoding algorithms
What does a rate of 1:2 mean in the context of convolutional codes?
What does a rate of 1:2 mean in the context of convolutional codes?
- For every two input bits, the encoder produces one output bit
- For every input bit, the encoder produces three output bits
- For every input bit, the encoder produces two output bits (correct)
- For every input bit, the encoder produces one output bit
Why are convolutional codes well-suited for real-time communication systems?
Why are convolutional codes well-suited for real-time communication systems?
In GSM, what is the purpose of convolutional encoding at both the mobile device and base station?
In GSM, what is the purpose of convolutional encoding at both the mobile device and base station?
What is the role of a Viterbi decoder in a communication system using convolutional codes?
What is the role of a Viterbi decoder in a communication system using convolutional codes?
What is the purpose of Forward Error Control in Convolutional codes?
What is the purpose of Forward Error Control in Convolutional codes?
How do convolutional codes differ from other error correction techniques?
How do convolutional codes differ from other error correction techniques?
What is the structure of a convolutional encoder?
What is the structure of a convolutional encoder?
Which parameter of convolutional codes represents the number of output bits?
Which parameter of convolutional codes represents the number of output bits?
What does the code rate (k/n) in convolutional codes measure?
What does the code rate (k/n) in convolutional codes measure?
In convolutional codes, why is k often set to 1?
In convolutional codes, why is k often set to 1?
What is the code rate for the convolutional encoder with (n, k, m)=(2,1,3)?
What is the code rate for the convolutional encoder with (n, k, m)=(2,1,3)?
In the context of convolutional coding, what is the purpose of the Viterbi algorithm?
In the context of convolutional coding, what is the purpose of the Viterbi algorithm?
How does convolutional coding enhance error correction capabilities in GSM?
How does convolutional coding enhance error correction capabilities in GSM?
What is the significance of the state diagram in convolutional encoding?
What is the significance of the state diagram in convolutional encoding?
Which algorithm is used for decoding convolutional codes?
Which algorithm is used for decoding convolutional codes?
Why is convolutional coding preferred in GSM for voice calls and data transmission?
Why is convolutional coding preferred in GSM for voice calls and data transmission?
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