LDPC for channel coding

1. What is LDPC channel coding?
2. Why is LDPC preferred for 5G?
3. What is the advantage of LDPC codes?
4. How many bits can LDPC correct?

What is LDPC channel coding?

Low-Density Parity Check (LDPC) codes represent a class of error correcting codes that may be employed for providing error correction of transmission errors in communication systems. Using LDPC codes, channel capacities that are close to the theoretical Shannon Limit can be achieved.

Why is LDPC preferred for 5G?

According to the 3rd Generation Partnership Project (3GPP) TS 38.212, LDPC is recommended for the Fifth-generation (5G) New Radio (NR) shared channels due to its high throughput, low latency, low decoding complexity and rate compatibility.

What is the advantage of LDPC codes?

By using iterative belief propagation techniques, LDPC codes can be decoded in time linear to their block length [7] The two most important advantages of LDPC codes are absence of low-weight code words and iterative decoding of lower complexity.

How many bits can LDPC correct?

Ignoring any lines going out of the picture, there are eight possible six-bit strings corresponding to valid codewords: (i.e., 000000, 011001, 110010, 101011, 111100, 100101, 001110, 010111). This LDPC code fragment represents a three-bit message encoded as six bits.