Patent ID: 8942335
Filing Date: 2015-01-27
Classification: H04B,H04L

Abstract:
1. A method executed in a transmitter that transmits blocks over two antennas to a receiver antenna, over a channel represented by a filter with L channel taps from each of said two antennas to said receiver antenna, where L is an integer and each block comprises a portion devoted to information and a portion devoted to a training sequence, comprising the steps of: choosing a root sequence, composed of N developing in said encoder a first training sequence of symbols by employing said root sequence in a first manner; developing in said encoder a second training sequence of symbols by employing said root sequence in a second manner that is different from said first manner; and applying said first training sequence to a first input of a mapper that maps the symbols of said first training sequence onto a constellation and applies them to a first of said two antennas during said portion devoted to training sequences; and applying said second training sequence to a second input of said mapper that maps the symbols of said second training sequence onto said constellation and applies them to a second of said two antennas during said portion devoted to training sequences.