Patent ID: 7711061
Filing Date: 2010-05-04
Classification: H04L

Abstract:
1. A method for generating a preamble of a data frame for a multiple input multiple output (MIMO) wireless communication, the method comprising: determining at least one system condition preamble format parameter, the at least one system condition preamble format parameter including a channel signal to noise ratio (SNR) between a transmitting MIMO wireless device and a receiving MIMO wireless device; and based upon the preamble format parameter, selecting one of a plurality of preamble formats, each preamble format including a respective format of a high throughput signal field, the selecting including: for a third system condition preamble format parameter, using a third preamble format that differs from both the first preamble format and the second preamble format, the high throughput signal field of the third preamble format including two BPSK OFDM symbols, one of which is rotated by 90 degrees; the selecting further including: