What is turbo code?
In telecommunication, turbo code is a class of high-performance forward error correction (FEC) codes developed in the early 1990s, known to achieve near-Shannon limit error-correcting capabilities. Built from a parallel concatenation of two or more relatively simple constituent codes and an interleaver, turbo code corrects errors by passing information through the constituent codes several times and combining the results. Decoding of turbo codes can be implemented in hardware efficiently, making them attractive for many digital communication applications.
How does turbo code work?
Turbo coding is a powerful technique used in wireless communication systems to improve the reliability of the transmitted signal. Turbo coding works by encoding the data to be transmitted using two or more codes, which are then combined to form the final code. The encoded data is then sent over the channel, and the receiver decodes it using the same two or more codes.
The main advantage of turbo coding is that it can provide a significant improvement in error performance over other coding schemes, such as convolutional codes. Turbo coding is also very flexible, and can be adapted to work in a variety of different conditions.
What are the benefits of turbo code?
Turbo codes are a type of forward error correction (FEC) code that are particularly well suited for use in noisy communication channels. Turbo codes were invented by Berrou, Glavieux, and Thitimajshima in 1993, and they have been gaining popularity ever since due to their excellent performance.
How is turbo code used?
Turbo codes are a type of forward error correction (FEC) code that are used in data transmission to detect and correct errors. They were developed in the early 1990s and have been widely used in a variety of applications such asdeep-space communications, high-speed data links, and wireless data networks.
Turbo codes work by encoding data using two or more codes in parallel, then combining the encoded data using a process called interleaving. The interleaved data is then transmitted over the channel. At the receiver, the data is de-interleaved and decoded using the same codes that were used at the transmitter. This allows the receiver to correct any errors that may have occurred during transmission.
Turbo codes can provide error correction performance that is very close to the Shannon limit, which is the theoretical maximum error correction performance that can be achieved for a given channel. For example, a turbo code with an overhead (the amount of extra data that is added to protect against errors) of just 3% can achieve an error correction performance that is within 1dB of the Shannon limit for a binary symmetric channel with a bit error rate (BER) of 10-6.