OFDM symbol transmission method and apparatus for providing sector diversity in a mobile communication system, and a system using the same
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United States of America Patent
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Issued Date -
Dec 1, 2005
app pub date -
May 25, 2005
filing date -
May 25, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and apparatus for transmitting an orthogonal frequency division multiplexing (OFDM) symbol from a base station to a mobile station in a wireless mobile communication system with a multicell/multisector structure formed by a plurality of base stations. The base station receives a plurality of complex symbols to be transmitted to the mobile station. The base station performs space-time coding (STC) on the plurality of complex symbols and selects the STC-coded symbols such that different space-time code streams are transmitted to adjacent sectors among sectors formed by the base station and other base stations. In addition, a selection pattern of the space-time code streams is updated such that it is circulated every predetermined time period, thereby providing uniform sector diversity for all mobile stations located in a sector/cell boundary.
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