Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2004-09-14
2009-12-29
Pérez-Gutiérrez, Rafael (Department: 2617)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C370S347000, C370S328000, C370S329000, C370S477000, C370S436000, C370S341000, C370S331000, C370S208000, C370S445000, C455S450000, C455S452200, C455S433000, C455S436000, C455S445000, C375S260000, C375S130000, C375S316000, C375S349000, C375S225000
Reexamination Certificate
active
07639660
ABSTRACT:
In the resource mapping method for data transmission, a time-frequency resource of a slot interval including OFDM symbols is divided into traffic channels and shared among the subscribers, the traffic channel including resource blocks uniformly distributed in the whole transmit frequency band, the resource block including consecutive subcarriers of consecutive received symbols having at least one inserted pilot symbol. The pilot symbols and the channel-encoded and modulated data symbols are processed by time-frequency mapping according to the resource-block-based mapping method to generate received symbols. The receiver separates the received symbols by subscribers according to the resource-block-based mapping method in a frequency domain, and performs iterative channel estimation, demodulation, and decoding by using the pilot and a data reference value after decoding for each traffic channel.
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Ahn Jae-Young
Kim Kwang-Soon
Kim Yun-Hee
Arevalo Joseph
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Perez-Gutierrez Rafael
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