Patent ID: 8953726
Filing Date: 2015-02-10
Classification: H04B

Abstract:
1. A method of selecting an antenna from a plurality of antennas in a wireless communication device, the method comprising: detecting a packet using a first antenna and performing a first coarse gain selection for the first antenna, thereby generating a first gain setting; determining one or more calibration parameters for one or more exponential effective SINR (signal to interference plus noise ratio) mapping (EESM) computations; performing a fast Fourier transform (FFT) operation for a first EESM computation of the one or more EESM computations with a first plurality of consecutive samples from a single symbol period of a short training field (STF) of the packet received by the first antenna using the first gain setting; switching to a second antenna; determining whether analog-to-digital conversion (ADC) saturation occurs after switching to the second antenna; and when no ADC saturation occurs after switching to the second antenna: when ADC saturation occurs after switching to the second antenna: