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Joint transmitter/receiver design for multicarrier data transmission with low latency time

A design method for low latency multicarrier transmission is presented. It can be considered as a generalization of the trailing-zeros transmitter approach (Scaglione et al., 1999). The generalization mainly consists of using FIR redundant filter banks for the transmitter and receiver instead of pure block transforms and choosing the guard interval independently of the channel impulse response length. Thanks to the latter, we can design a multicarrier transmission system with a low latency time, which is a critical parameter for online applications, even for the case that the channel has a long impulse response, as eg, a twisted-pair copper wire line of several miles length. The design of the transmitter and receiver is based on a Smith decomposition of the channel. The advantages as well as limitations of the new algorithm are discussed.