Invention Grant
US09054933B2 Orthogonal frequency division multiplex (OFDM) receiver with phase noise mitigation and reduced latency
有权
正交频分复用(OFDM)接收机,具有相位噪声缓解和降低的延迟
- Patent Title: Orthogonal frequency division multiplex (OFDM) receiver with phase noise mitigation and reduced latency
- Patent Title (中): 正交频分复用(OFDM)接收机,具有相位噪声缓解和降低的延迟
-
Application No.: US13997691Application Date: 2011-12-20
-
Publication No.: US09054933B2Publication Date: 2015-06-09
- Inventor: Bernard Arambepola , Thushara Hewavithana , Parveen K. Shukla , Sahan S. Gamage
- Applicant: Bernard Arambepola , Thushara Hewavithana , Parveen K. Shukla , Sahan S. Gamage
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Grossman, Tucker, Perreault & Pfleger, PLLC
- International Application: PCT/US2011/065978 WO 20111220
- International Announcement: WO2013/095353 WO 20130627
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04L27/26 ; H04L1/00

Abstract:
A system according to one embodiment includes a demodulator configured to receive an orthogonal frequency division multiplexed (OFDM) modulated signal comprising a current symbol and a sequence of previous symbols, each of the symbols comprising one or more pilot sub-carriers and one or more data sub-carriers; a phase angle computation circuit coupled to the demodulator, the phase angle computation circuit configured to compute a first mean, the first mean computed from the phase angle of one or more of the pilot sub-carriers of a predetermined number of the previous symbols; a predictive filter circuit coupled to the phase angle computation circuit, the predictive filter circuit configured to compute a second mean, the second mean estimating the phase angle of one or more sub-carriers of the current symbol, the estimation based on the first mean; and a phase noise cancelling circuit coupled to the predictive filter circuit, the phase noise cancelling circuit configured to correct the phase of one or more sub-carriers of the current symbol based on the second mean.
Public/Granted literature
- US20140211889A1 ORTHOGONAL FREQUENCY DIVISION MULTIPLEX (OFDM) RECEIVER WITH PHASE NOISE MITIGATION AND REDUCED LATENCY Public/Granted day:2014-07-31
Information query