Patent ID: 9191092
Filing Date: 2015-11-17
Classification: H04B,H04L,H04W,Y02D

Abstract:
1. A communication device comprising: at least one communication interface to receive a signal adapted for Greenfield access via a plurality of antennas, wherein: wherein: the second HT-STF being a cyclic diversity delay shifted version of the first HT-STF; the second single HT LTF being a cyclic diversity delay shifted version of the first single HT LTF; the second SIG field being a cyclic diversity delay shifted version of the first SIG field; and at least one of the second plurality of HT LTFs being a cyclic diversity delay shifted version of at least one of the first plurality of HT LTFs; and wherein the at least one communication interface includes low noise amplification circuitry and wherein the at least one communication interface extracts and uses at least one of: the first HT-STF or the second HT-STF, for automatic gain control (AGC) of the low noise amplification circuitry.