Patent ID: 8155229
Filing Date: 2012-04-10
Classification: H04L

Abstract:
1. A method for transmitting a signal in a signal transmission apparatus of a communication system, comprising the steps of: upon receipt of an information vector, converting in parallel, by a serial-to-parallel converter, the information vector into a plurality of sub-information vectors; coding, by a plurality of encoders, each of the plurality of sub-information vectors according to a predetermined encoding scheme; modulating, by a plurality of modulators, each of the coded sub-information vectors according to a predetermined modulation scheme, thereby generating modulation symbols; interleaving, by an interleaver/per mode allocator, the generated modulation symbols; determining, by the interleaver/per mode allocator, a mode corresponding to a combination of the predetermined encoding scheme and the predetermined modulation scheme; allocating power, by the interleaver/per mode allocator, to the interleaved modulation symbols according to the determined mode; and beamforming, by a plurality of beamformers, the power-allocated modulation symbols, and transmitting the beamformed symbols by a transmitter, wherein the mode is determined based on a coding rate, a constellation size corresponding to the predetermined modulation scheme, and the allocated power, wherein each of the generated modulation symbols includes a mode index indicating the determined mode, and position information in the determined mode, and wherein the mode is one of a plurality of modes used in the signal transmission apparatus, and a reception Signal-to-Noise Ratio (SNR) targeted by each of the plurality of modes is determined by a required reception SNR set taking decoding reliability in a corresponding channel into account, and by a size of the corresponding channel.