Howtosignalprocessing
- What is the interleaver in Turbo codes?
- How iterative decoding is achieved in turbo decoder?
- How do Turbo codes work?
- What is turbo encoder and decoder?
What is the interleaver in Turbo codes?
The interleaver is a fundamental part of the turbo code design and plays a critical role in the performance of turbo coding. The basic role of the interleaver is to construct a random code and spread out burst errors.
How iterative decoding is achieved in turbo decoder?
An iterative turbo decoder consists of two component decoders, identical to the one in the encoder, concatenated serially via an interleaver as shown in Figure 2, these two component decoders are soft input soft output (SISO) decoders. SISO decoder accepts soft inputs and give soft outputs for the decoded sequence.
How do Turbo codes work?
Turbo codes are a much more developed way of integrating information redundancy. They are based on the transmission of the initial message in three copies. The first copy is the raw, non-encoded information. The second is modified by encoding each bit of information using an algorithm shared by the coder and decoder.
What is turbo encoder and decoder?
A basic turbo encoder consists of two or more component encoders concatenated in parallel and separated by an interleaver. The turbo decoder uses soft decision to decode the bits and the decoding is done in an iterative fashion to increase reliability of the decision.
