Patent ID: 8494075

Claim:
A phase tracking reception method for a wireless communication system, the method comprising: initiating processing of a preamble of a wireless frame received by multiple space time streams, the preamble including a plurality of very high throughput long training fields (VHT-LTFs), each of the VHT-LTFs including pilot tones and data tones, wherein the pilot tones are the same for the multiple space time streams; for a first VHT-LTF of the plurality of VHT-LTFs, estimating a first one dimensional channel response for each of the pilot tones of the first VHT-LTF; for a second VHT-LTF of the plurality of VHT-LTFs, estimating a second one dimensional channel response for each of the pilot tones of the second VHT-LTF; estimating a first phase rotation in response to the first and second one dimensional channel responses; and applying a phase correction to the data tones of the second VHT-LTF in response to the first phase rotation, thereby generating a plurality of corrected data tones for a downstream processing.