Inphi Corporation

Marvell Asia Pte., Ltd.

Texas Instruments Corporation

Sean Batty

Arash Farhoodfar

Sudeep Bhoja

Shaun Lytollis

Andre Szczepanek

Parmanand Mishra

Simon D Forey

Embodiments relate to the emulation of the effect of Forward Error Correction (FEC) codes, e.g., GFReed Solomon (RS) FEC codes, on the bit error ratio (BER) of received Pseudo-Random Binary Sequences (PRBS) patterns. In particular, embodiments group errors into RS-FEC symbols and codewords in order to determine if the errors are correctable. By emulating the error correction capabilities of FEC codes in order to determine which errors are correctable by the code, embodiments afford a more accurate representation of the post-FEC BER of RS FEC codes from links carrying PRBS patterns. This FEC code emulation provides error correction statistics, for stand-alone use or for error correction in connection with Bit Error Rate Testers (BERTs).

Forward error correction including correction capability determinations based on symbol errors of error bit based codewords

Forward error correction (FEC) emulator

The present invention is directed to data communication. More specifically, embodiments of the present invention provide a method for acquiring sampling frequency by sweeping through a predetermined frequency range, performing data sampling at different frequencies within the predetermined frequency range, and determining a target frequency for sampling data based on a maximum early peak frequency and a maximum late peak frequency. There are other embodiments as well.

Frequency acquisition for serdes receivers

Frequency acquisition for SERDES receivers

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Machynlleth, United Kingdom

Sean Batty