Patent ID: 8422580
Filing Date: 2013-04-16
Classification: H04L

Abstract:
1. A method of encoding input channel element pairs for transmission, said method comprising: (a) transforming first and second input channel element pairs into respective first and second orthogonal channel element pairs; (b) mapping a first element and a second element, which form the first input channel element pair, and a third element, which is a duplicate of said second element, to respective first, second and third predetermined time-frequency cells in a first two-dimension time-frequency matrix for transmission via a first antenna, said first and second elements being mapped for transmission at different frequencies and said first and third elements being mapped for transmission at different times; (c) mapping a fourth element and a fifth element, which form the second input channel element pair, and a sixth element, which is a duplicate of said fifth element, to respective fourth, fifth and sixth predetermined time-frequency cells in the first two-dimension time-frequency matrix for transmission via the first antenna, said fourth and fifth elements being mapped for transmission at different frequencies and said fourth and sixth elements being mapped for transmission at different times; (d) mapping a seventh element and an eighth element, which form the first orthogonal channel element pair, and a ninth element, which is a duplicate of said eighth element, to respective first, second and third predetermined time-frequency cells in a second two-dimension time frequency matrix for transmission via a second antenna, said seventh and eighth elements being mapped for transmission at different frequencies and said seventh and ninth elements being mapped for transmission at different times; and (e) mapping a tenth element and an eleventh element, which form the second orthogonal channel element pair, and a twelfth element, which is a duplicate of said eleventh element, to respective fourth, fifth and sixth predetermined time-frequency cells in the second two-dimension time-frequency matrix for transmission via the second antenna, said tenth and eleventh elements being mapped for transmission at different frequencies and said tenth and twelfth elements being mapped for transmission at different times.