发明名称 |
MULTIPLE-ANTENNA COMMUNICATION SYSTEMS AND METHODS FOR COMMUNICATING IN WIRELESS LOCAL AREA NETWORKS THAT INCLUDE SINGLE-ANTENNA COMMUNICATION DEVICES |
摘要 |
<p>In a wireless local area network (WLAN) that includes high-throughput communication devices with multiple antennas and legacy communication devices with single antennas, training tones are transmitted over a plurality of spatial channels during a first portion of an orthogonal frequency division multiplexed (OFDM) packet-training preamble. The training tones are interspersed among subcarrier frequencies of the spatial channels. The training tones are retransmitted during a second portion of the packettraining preamble. The training tones are shifted among the subcarrier frequencies of the spatial channels during the retransmission allowing a high-throughput receiving station to perform a channel estimation on different subcarrier frequencies of the spatial channels. The legacy communication devices may receive and process the training tones and may set their network allocation vector to refrain from communicating during a subsequent interval.</p> |
申请公布号 |
WO2005067247(A1) |
申请公布日期 |
2005.07.21 |
申请号 |
WO2004US43324 |
申请日期 |
2004.12.24 |
申请人 |
INTEL CORPORATION;SANDHU, SUMEET |
发明人 |
SANDHU, SUMEET |
分类号 |
H04B7/06;H04B7/02;H04B7/04;H04L1/06;H04L25/02;H04L27/26;(IPC1-7):H04L27/26 |
主分类号 |
H04B7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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