OFDM communication system with multiple OFDM symbol sizes

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United States of America Patent

PATENT NO 9154274
APP PUB NO 20130279614A1
SERIAL NO

13920971

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Techniques to use OFDM symbols of different sizes to achieve greater efficiency for OFDM systems. The system traffic may be arranged into different categories (e.g., control data, user data, and pilot data). For each category, one or more OFDM symbols of the proper sizes may be selected for use based on the expected payload size for the traffic in that category. For example, control data may be transmitted using OFDM symbols of a first size, user data may be transmitted using OFDM symbols of the first size and a second size, and pilot data may be transmitted using OFDM symbols of a third size or the first size. In one exemplary design, a small OFDM symbol is utilized for pilot and for transport channels used to send control data, and a large OFDM symbol and the small OFDM symbol are utilized for transport channels used to send user data.

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Patent Owner(s)

  • QUALCOMM INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Howard, Steven J Ashland, US 126 11495
Ketchum, John W Harvard, US 146 14123
Wallace, Mark Bedford, US 85 8608
Walton, Jay Rod Carlisle, US 26 3632

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