H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/06 (2006.01) H04L 1/00 (2006.01) H04L 5/04 (2006.01) H04L 27/34 (2006.01)
Patent
CA 2540026
Techniques are provided for performing hierarchical coding in a multi-antenna communication system (e.g., a SIMO, MISO, or MIMO system). At a transmitter, a base stream and an enhancement stream are coded and modulated separately to obtain first and second data symbol streams, respectively. The first data symbol stream is processed in accordance with a first spatial processing scheme (e.g., a transmit diversity or a spatial multiplexing scheme) to obtain a first set of symbol substreams. The second data symbol stream is processed in accordance with a second spatial processing scheme (e.g., transmit diversity or spatial multiplexing) to obtain a second set of symbol substreams. The first set of symbol substreams is combined (e.g., using time division multiplexing or superposition) with the second set of symbol substreams to obtain multiple transmit symbol streams for transmission from multiple transmit antennas. A receiver performs complementary processing to recover the base stream and enhancement stream.
L'invention concerne des techniques qui permettent d'accomplir un codage hiérarchique dans un système de communication à antennes multiples (système SIMO, MISO ou MIMO, par exemple). Un émetteur, un train de base et un train de rehaussement sont codés et modulés séparément pour obtenir un premier et un second trains de symboles de données, respectivement. Le premier train de symboles de données est traité conformément à un premier plan de traitement spatial (p. ex. une diversité de transmission ou un plan de multiplexage spatial) pour obtenir un premier ensemble de trains secondaires de symboles. Le second train de symboles de données est traité conformément à un second plan de traitement spatial (p. ex. une diversité de transmission ou un multiplexage spatial) pour obtenir un second ensemble de trains secondaires de symboles. Le premier ensemble de trains secondaires de symboles est combiné (p. ex. en utilisant un multiplexage temporel ou une superposition) avec le second ensemble de trains secondaires de symboles pour obtenir plusieurs trains de symboles de transmission à transmettre à partir des multiples antennes de transmission. Un récepteur effectue un traitement complémentaire pour récupérer le train de base et le train de rehaussement.
Agrawal Avneesh
Mantravadi Ashok
Qualcomm Incorporated
Smart & Biggar
LandOfFree
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