对空时码在不同信噪比下性能仿真比较，可以画出信噪比曲线。-Pairs of space-time codes in different SNR performance simulation of comparison, the SNR curve can be drawn.

This simulation plots the Effective SNR of and OFDM as a function of Output Power Backoff from 0 to 9.5 dB, for three different number of carriers.