摘要 |
A discrete multi-tone (DMT) communication system is provided herein, replacing the conventional inversed discrete Fourier transform (IDFT) and DFT with IDHT (together with the complex-to-real transformation) and a DHT alone respectively at the transmitting end and the receiving end. A DHT-based frequency-domain equalizer (FEQ) at the receiving end equalizes each of the 0-th to (N-1)-th DHT subchannels, where N is the number of point of the DHT. Finally, each of the 0-th to <maths id="MATH-US-00001" num="00001"> <math overflow="scroll"> <mrow> <mrow> <mo>(</mo> <mrow> <mfrac> <mi>N</mi> <mn>2</mn> </mfrac> <mo>-</mo> <mn>1</mn> </mrow> <mo>)</mo> </mrow> <mo>-</mo> <mi>th</mi> </mrow> </math> </maths> subchannels of the DMT system is obtained by combining the k-th and (N-k)-th subchannels of the DHT-based FEQ for k=0, 1, . . . , <maths id="MATH-US-00002" num="00002"> <math overflow="scroll"> <mrow> <mrow> <mo>(</mo> <mrow> <mfrac> <mi>N</mi> <mn>2</mn> </mfrac> <mo>-</mo> <mn>1</mn> </mrow> <mo>)</mo> </mrow> <mo>.</mo> </mrow> </math> </maths>
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