Patent ID: 7167535
Filing Date: 2007-01-23
Classification: H04L

Abstract:
1. A WLAN (Wireless Local Area Network) receiver having a synchronization unit, said synchronization unit comprising: a frequency error correction unit configured to perform a frequency error correction process; a phase error correction unit configured to perform a phase error correction process; a filter circuit capable of applying one of at least two different filter transfer functions, wherein a first one of said at least two different filter transfer functions is a frequency error correction filter transfer function for use in said frequency error correction process and a second one of said at least two different filter transfer functions is a phase error correction filter transfer function for use in said phase error correction process; an angle decoder circuit configured to perform an angle decoder process in one of at least two modes, wherein a first one of said at least two modes is a frequency error correction mode for use of said angle decoder circuit in said frequency error correction process and a second one of said at least two modes is a phase error correction mode for use of said angle decoder circuit in said phase error correction process; and a controller unit connected to said filter circuit to select one of said at least two different filter transfer functions, wherein said controller unit is connected to said angle decoder to select one of said at least two modes and said frequency error correction unit and said phase error correction unit comprise said filter circuit and said angle decoder circuit for performing the respective error correction process.