The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2012
Filed:
Aug. 22, 2008
Prem Kiran Nerella, Hyderabad, IN;
Karthik Vaidyanathan, Bangalore, IN;
Partha Sarathy Murali, San Jose, CA (US);
Prem Kiran Nerella, Hyderabad, IN;
Karthik Vaidyanathan, Bangalore, IN;
Partha Sarathy Murali, San Jose, CA (US);
Redpine Signals, Inc., San Jose, CA (US);
Abstract
A receive filter for a stream of OFDM symbols has an infinite impulse response (IIR) filter which receives packets having a preamble part followed by a data part, the data part having a succession of cyclic prefixes followed by OFDM symbols. The packet is provided to the IIR filter, and the registers of the IIR filter are reset before or during each cyclic prefix. The IIR filter may be formed from registers which are coupled to return a value to a predecessor register, or as an array of registers, such as in a BIQUAD configuration, where the registers are reset by a shared reset signal.
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