Patent ID: 7551907
Filing Date: 2009-06-23
Classification: H03F,H03G,H04L

Abstract:
1. An ultra wideband OFDM receiver, comprising: at least one channel comprising an antenna, a low noise amplifier coupled to the antenna and a variable gain amplifier coupled to each mixed and filtered I and Q output of the low noise amplifier; a gain controller communicatively coupled to a parallel/serial interface; and a calculation engine, which is communicatively coupled to the gain controller, and calculates the gain codes during a preamble portion of a packet; wherein the gain controller transmits gain codes for adjusting gain of the variable gain amplifier to the parallel/serial interface, which is further communicatively coupled to a variable gain amplifier controller; wherein the gain controller transmits gain codes for adjusting gain of the low noise amplifier to the parallel/serial interface, which is further communicatively coupled to a low noise amplifier controller; wherein the gain codes include three gain codes per channel corresponding to frequency hops over three bands per channel; wherein the gain codes are based on received energy at each antenna; wherein the calculation engine repeatedly calculates the gain codes every set integer number of symbols within a payload portion of the packet.