Power division multiplexing with incoherent signals and...

Details Power division multiplexing with incoherent signals and... Power division multiplexing with incoherent signals and...

H - Electricity

04

L

H04L 27/00 (2006.01) H04H 20/86 (2008.01) H04L 27/34 (2006.01) H04L 27/38 (2006.01)

Patent

CA 2442400

A multiresolution transmission scheme is proposed in which the different data is transmitted from separate incoherent transmitters possibly located at different locations. This scheme permits a backward compatible upgrade of an existing system. The different data streams are transmitted at different power levels, that is power division multiplexing is used. A multistage receiver which performs successive cancellation is proposed to extract the data. For each transmitter QPSK modulation is considered.

Cette invention porte sur un système de transmission multirésolution selon lequel les différentes données sont transmises à partir d'émetteurs incohérents distincts éventuellement disposés à divers endroits. Ce système permet d'effectuer une mise à niveau rétrocompatible d'un système existant. Les différents flots de données sont émis à différents niveaux de puissance, utilisant ainsi le multiplexage de division de puissance. Selon cette invention, un récepteur multi-étapes, qui effectue des annulations successives, extrait les données. Une modulation par déplacement de phase en quadrature (MDPQ) est envisagée pour chacun des émetteurs.

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