Long training sequence for MIMO WLAN systems

Details Long training sequence for MIMO WLAN systems Long training sequence for MIMO WLAN systems

2004-08-30

2009-06-30

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S260000, C375S264000, C375S299000, C375S347000, C455S226100, C455S561000, C455S522000, C455S562100

Reexamination Certificate

active

07555053

ABSTRACT:
A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of preambles includes a carrier detection sequence at a legacy transmit rate, a first channel sounding at the legacy transmit rate, a signal field at the legacy transmit rate, and Z−1 channel soundings at a MIMO transmit rate, where L corresponds to a number of channel soundings. The method continues by simultaneously transmitting the plurality of preambles via the plurality of transmit antennas.

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Jianhua Liu et al: “A MIMO System with Backward Compatibility for OFDM Based WLANs”; Signal Processing Advances in Wireless Communications, 2003: SPAWC 2003; 4th IEEE Workshop on Rome, Italy Jun. 15-18, 2003; Piscataway, NJ, USA; IEEE, US, Jun. 15, 2003, pp. 130-134, XP010713389; ISBN: 0-7803-7858-X.

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