Paradise Datacom introduces new 8QAM/LDPC feature
Paradise Datacom has obsoleted our previous version of 8QAM LDPC, replacing it with “FastLink”, a vastly superior performing combination of 8QAM and low latency LDPC. FastLink LDPC is a new low-latency Low Density Parity Code FEC from Paradise designed specifically for latency-sensitive applications. The performance of traditional forward error correction schemes represents a trade off between latency and coding gain. FastLink LDPC has been designed by Paradise engineers from the ground up to optimize latency and throughput while giving coding gain that is close to the theoretical limits.
FastLink LDPC matches or beats conventional LDPC and TPC across the board in relation to both latency and coding gain, meaning potentially that no other FEC may ever be required, particularly as it is available on all Evolution and all Quantum modems at all data rates. All Evolution and Quantum modems using FastLink will therefore interoperate up to the maximum data rate for each model.
A set of 15 modulation and FEC rate options have been designed to give optimal Es/No performance when charted against spectral efficiency. Typically these offer improved coding gains of around 1dB when compared to TPC and are close to the coding gains of conventional LDPC. They also reduce latency when compared to conventional LDPC by up to 90%. FastLink LDPC is therefore well balanced, giving extremely good all round performance.
For particularly demanding applications you can choose to optimise latency or BER performance even further, unlike other low-latency LDPC FECs that are available.
