What is channel coding gain?

Channel coding gain refers to the improvement in the signal-to-noise ratio (SNR) that can be achieved through the use of error-correcting codes in a communication system. By adding redundancy to the transmitted data, these codes enable the receiver to detect and correct errors caused by noise or interference, effectively enhancing the system's reliability. This gain allows for better performance in terms of data transmission rates and reduces the required SNR for reliable communication. In essence, it quantifies how much more robust a communication link becomes due to the application of coding techniques.