Patent ID: 7106781
Filing Date: 2006-09-12
Classification: H04B,H04L,H04W

Abstract:
1. A highly bandwidth-efficient communications method, comprising: a) receiving at a base station having a multi-element antenna array, during a first time period, a first spread signal comprising a first data signal redundantly spread over a plurality of discrete tones in accordance with a first spreading code; b) despreading the first spread signal received at the base station, using despreading codes that are determined adaptively based on at least one characteristic of the first spread signal received at least two of the antenna elements of the array; c) spreading a second data signal at the base station, using second spreading codes derived from the despreading codes, the second spreading codes redundantly spreading the second data signal over a plurality of discrete tones and over at least two of the antenna elements of the array, to form a second spread signal that is thereby both spectrally and spatially spread; and d) transmitting the second spread signal during a second time period.