掌握数字基带传输系统的误码率计算；理解信道噪声和码间干扰对系统性能的影响 -BER master digital baseband transmission system calculated understand the impact of channel noise and inter-symbol interference on system performance

Here, wavelets are used in Orthogonal frequency division multiplexing. Wavelets are small waves having amplitude increase starting zero and reduces back to zero. In conventional OFDM, IFFT is used at the transmitter side and FFT is used at receiver.