Linear Space-Time Codes With Optimal Diversity-Multiplexing Tradeoff
Source: University of Notre Dame
In an effort to construct Space-Time Codes (STC) that enjoy both optimality with respect to the Diversity-Multiplexing Tradeoff (DMT) and encoding simplicity, the authors consider linear dispersion codes and establish a necessary and sufficient condition, in terms of the dispersion matrix, such that the resulting STC is DMT-optimal. They also present a simple construction that satisfies this condition, and is therefore DMT-optimal, for arbitrary number of transmit and receive antennas. It is well known that Multi-Input Multi-Output (MIMO) wireless systems offer two types of enhancements, i.e., throughput and reliability.