Patent ID: 7145940
Filing Date: 2006-12-05
Classification: H04B,H04L

Abstract:
1. A method of transmitting a pilot in a wireless multi-antenna communication system, comprising: generating a first set of T scaled pilot symbols with a first vector of T coefficients, where T is an integer greater than one, and wherein the first set of scaled pilot symbols is suitable for use for channel estimation by receivers with a single antenna; selectively generating at least T−1 additional sets of T scaled pilot symbols with at least T−1 additional vectors if at least one receiver with multiple antennas is to be supported by the system, each additional vector including T coefficients, wherein the first and at least T−1 additional vectors are different vectors in a matrix, and wherein the first and at least T−1 additional sets of scaled pilot symbols are suitable for use for channel estimation by the at least one receiver with multiple antennas; and transmitting each set of T scaled pilot symbols via T transmit antennas, one scaled pilot symbol on each transmit antenna.