Patent ID: 8059710
Filing Date: 2011-11-15
Classification: H04B,H04L

Abstract:
1. A space-time coding method for a UWB transmission system comprising at least two radiative elements, said method comprising: coding a block of information symbols (S=(a defined to within one permutation of its lines and/or its columns, a line corresponding to a transmission interval and a column to a radiative element, wherein P is the number of radiative elements and Ω is a matrix of size M×M defined by and O 2×2 is the zero matrix of size 2×2, to within a margin of ±10%, wherein I M is the identity matrix of size M×M,   is the tensor product, a l , =1, . . . , P 2 are the information symbols, R j is a line vector of dimension P corresponding to the j th line of an orthogonal matrix R generating the lattice points A={uθ|uεZ p } with wherein N is a positive integer such that φ(N)=2P wherein φ(.) is the Euler indicator and wherein N′ is a positive integer such that φ(N′)≧P and N, N′ are prime together.