publication . Patent . 2007

Analog fourier transform channelizer and OFDM receiver

Open Access English
  • Published: 22 Mar 2007
  • Publisher: United States Patent and Trademark Office
  • Country: United States
Abstract
An OFDM receiver having an analog multiplier based I-Q channelizing filter, samples and holds consecutive analog I-Q samples of an I-Q baseband, the I-Q basebands having OFDM sub-channels. A lattice of analog I-Q multipliers and analog I-Q summers concurrently receives the held analog I-Q samples, performs analog I-Q multiplications and analog I-Q additions to concurrently generate a plurality of analog I-Q output signals, representing an N-point discrete Fourier transform of the held analog samples, the I-Q signals having relative phase and magnitude representing bits in the OFDM sub-channels. The phase and magnitude may represent QPSK. Optionally, a phase shif...
Subjects
free text keywords: 370/203, 370/206, 370/208, 370/210, 375/260, 375/340, 375/350, G06G7/1921, H04L27/265
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Patent . 2007
Provider: VTechWorks
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