Howtosignalprocessing
The code rate (or information rate) is a fractional number that expresses what part of the redundant message is actually meaningful. For instance an encoder with 1/3 rate will output 3 bits of message for each bit of data. Therefore, bigger code rates produce stronger codes.
- How do you find the code rate?
- What is channel coding rate?
- What is code rate in LTE?
- What is the code rate in Error Control coding?
How do you find the code rate?
The code rate is R = k/n. The Hamming distance d between two codewords is the number of positions by which they differ. For example, the codewords 110101 and 111001 have a distance of d = 2.
What is channel coding rate?
The channel-coding rate is defined as which can be interpreted as the number of information bits per coded channel symbol. Assuming lossless transmission of these equiprobable binary words, the OPTA inequality reads: (2.23)
What is code rate in LTE?
In fact coding rate range is 0.0762 - 0.9258. Radio link quality is estimated based on CQI (Channel Quality Indicator). CQI is reported by UE (User Equipment) and measured based on Cell Reference Signal (CRS).
What is the code rate in Error Control coding?
The ratio k/n is the code rate. It is denoted by r and the value of r is r < 1. The n−k bits added here, are parity bits. Parity bits help in error detection and error correction, and also in locating the data.
