Multi-tone transceiver system using two steps of DMT-CMFB

   
   

A wideband multi-tone transceiver system interoperable with Asymmetric Digital Subscriber Line (ADSL) transceiver system, and including a two-step transceiver system having a discrete multi-tone transceiver system and a cosine modulated filter bank (CMFB) transmultiplexer. The two-step transceiver system provides a physically transparent transmission channel to each sub-band signal by minimizing the interference between sub-bands regardless of the transmission channel characteristics. The two-step transceiver system is realized with a comparably simple structure, and the circuit size is drastically reduced by sharing the FFT function with other sub-channels with the maximal utilization of the high-speed circuit when realizing each sub-channel's DMT modulation and demodulation function.

Um sistema wideband do transceptor do multi-tom interoperable com linha asymmetric do subscritor de Digital (ADSL) sistema do transceptor, e incluir um sistema two-step do transceptor que tem um sistema discreto do transceptor do multi-tom e um cosine modulou o transmultiplexer do banco de filtro (CMFB). O sistema two-step do transceptor fornece uma canaleta de transmissão fisicamente transparente a cada sinal do sub-band minimizando a interferência entre sub-bands não obstante as características da canaleta de transmissão. O sistema two-step do transceptor é realizado com uma estrutura comparàvel simples, e o tamanho do circuito é reduzido dràstica compartilhando da função de FFT com outros sub-channels com a utilização máxima do circuito de alta velocidade ao realizar a modulação de DMT de cada sub-channel e a função da demodulação.

 
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