METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PILOT SYMBOLS IN ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING BASED COMMUNICATION SYSTEMS
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United States of America Patent
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N/A
Issued Date -
Aug 16, 2007
app pub date -
Feb 15, 2007
filing date -
Feb 16, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for transmitting and receiving pilot symbols in an orthogonal frequency division multiplexing (OFDM)-based communication system is provided. Pilot symbols are mapped to pilot tone frequencies assigned to terminals, and even-numbered or odd-numbered pilot symbols are phase-rotated to be orthogonal. An apparatus for transmitting pilot symbols in an OFDM-based communication system is provided. A tone mapping unit maps pilot tone frequencies assigned to terminals onto pilot symbols to be transmitted, and a phase rotation unit phase-rotates either even-numbered or odd-numbered pilot symbols. An apparatus for transmitting pilot symbols in an OFDM-based communication system is provided. A tone mapping unit maps pilot tone frequencies assigned to terminals onto pilot symbols to be transmitted, and a transmission unit stores a signal in a buffer and transmits a first portion of the signal in a first pilot symbol and a second portion of the signal in a second pilot symbol.
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