Interleaver and parser for OFDM MIMO systems
AssigneeSamsung Electronics Co., Ltd.
InventorsXuemei Ouyang, Huaning Niu, Chiu Ngo
Life of this patent
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Abstract
A MIMO wireless system includes a transmitter that has a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing multiple column rotation to increase diversity of the wireless system. The MIMO wireless system also includes a receiver that has deinterleavers that deinterleaves spatial bit streams transmitted by the transmitter.
Claims25
A method of data communication in a wireless system, comprising the steps of:
- parsing a bit stream into multiple spatial data streams;
- interleaving the bits in each spatial data stream by performing multiple column rotation to increase diversity of the wireless system;
- and
- transmitting the bits of each spatial data stream,
- wherein the number of column rotations for each spatial data stream is a function of the number of the total spatial data streams,
- wherein the number of column rotations for each spatial data stream is a function of the number of the total spatial data streams and the number of columns in the interleaver array, and each spatial data stream interleaver array includes Nrow rows and Ncolumn columns of bits, such that the number of column rotations for each spatial data stream is ((Ncolumn/Nss)×iss) column rotations, where Nss is the number of spatial data streams and iss is index of spatial data stream.
A wireless communication system, comprising:
- a transmitter including:
- a parser that parses a bit stream into multiple spatial data streams;
- multiple interleavers corresponding to the multiple spatial data streams, wherein each interleaver interleaves the bits in the corresponding spatial data stream by performing multiple column rotation to increase diversity of the wireless system;
- and
- a modulator that transmits the bits of each spatial data stream;
- and
- a receiver that receives and deinterleaves the transmitted bits, wherein the number of column rotations for each spatial data stream is a function of the number of the spatial data streams,
- wherein the number of column rotations for each spatial data stream is a function of the number of the spatial data streams and the number of bit columns in the interleaver array, and each spatial data stream interleaver array includes Nrow rows and Ncolumn columns of bits, such that the number of column rotations for each spatial data stream is ((Ncolumn/Nss)×iss) column rotations, where Nss is the number of spatial data streams and iss is index of spatial data stream.
Dependencies are inferred from the claim text.