What are two new features added in DOCSIS 3.1 to enhance HFC networks?

The features of Orthogonal Frequency Division Multiplexing (OFDM) and Low-Density Parity-Check (LDPC) coding introduced in DOCSIS 3.1 are significant advancements that enhance the performance and capacity of Hybrid Fiber Coaxial (HFC) networks.

OFDM is a technique that allows for more efficient transmission of data by dividing a signal into multiple smaller sub-signals that are transmitted simultaneously over different frequencies. This approach offers improved resistance to interference and better utilization of available bandwidth, resulting in higher data rates and improved service reliability.

Low-Density Parity-Check (LDPC) codes are a form of error correction that allows for more efficient detection and correction of errors in transmitted data. By using LDPC coding, DOCSIS 3.1 can significantly enhance data throughput and reduce latency, ensuring that users experience higher-quality broadband service.

These innovations work together to provide substantial improvements over previous DOCSIS standards by increasing data capacity, enhancing spectral efficiency, and improving overall network robustness.