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MIMO-MMSE-SIC-HARQ communication system

A MIMO-MMSE-SIC-HARQ, communication system technology, applied in the field of information transmission, can solve problems such as the loss of throughput, achieve the effect of improving error performance, increasing system capacity, and reducing computational complexity

Inactive Publication Date: 2008-10-01
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method brings a very large loss in throughput

Method used

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  • MIMO-MMSE-SIC-HARQ communication system

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Embodiment Construction

[0027] Will figure 1 Coded modulator 1 (106) and coded modulator 2 (108) in the shown transmitter are designed, according to the transmitter coded modulator of the present invention such as figure 2 shown. The coded modulator 200 according to the present invention firstly performs segmentation 202 on a data stream of a transmitting antenna, and the data stream obtained after the segmentation 202 has two or more sub-data streams. The lengths of each sub-stream may be equal or unequal, and two sub-streams are taken as an example for illustration here.

[0028] Sub-data stream 1 is first added with CRC bits 204, and then sent to encoder 1 (206) for encoding and puncturing. It is then input to interleaver 1 (208) for bit-level interleaving. Sub-data stream 2 is first added with CRC bits 210, then sent to encoder 2 (212) for encoding and puncturing, and then input to interleaver 2 (214) for bit-level interleaving. Encoder 1 (206) and Encoder 2 (212) may be the same or differen...

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Abstract

The invention provides a MIMO-MMSE-SIC-HARQ communications system which includes an emitter and a receiver. The emitter includes an encoder modulator, the encoder modulator includes: a segmenting unit suitable for segmenting antenna data stream into two or more than two sub-data stream, a CRC encoder suitable for checking bit encoding and punching to the sub-data stream; an interleaver suitable for interweaving encoding data stream; a modulator. The receiver includes: a channel quality measurer suitable for measuring and calculating channel quality and obtaining channel quality experienced by each data stream in fact; a MMSE detector suitable for processing MMSE detection to data stream; a SIC detector suitable for processing SIC detection to data stream; a layered detector for processing layered detecting to data stream. Relative to prior MIMO-MMSE-SIC-HARQ communications system, the MIMO-MMSE-SIC-HARQ communications system provided by the invention can reduce operation complexity of whole receiver, improve detection error performance, and increase system capacity.

Description

technical field [0001] The present invention relates to information transmission in a wireless communication system, and in particular to a MIMO-MMSE-SIC-HARQ communication system, which is used to deal with the MCS scheme adopted by the data flow and the actually experienced channel quality when the scheme does not match, so as to improve the system capacity . Background technique [0002] figure 1 An existing MIMO-MMSE-SIC-HARQ (multiple input multiple output-minimum mean square error-successive interference cancellation-hybrid automatic retransmission request) communication system is shown. MIMO-MMSE-SIC-HARQ communication system 100 includes a transmitter 102 and a receiver 104 . [0003] Transmitter 102 performs parallel transmission of multiple data streams, figure 1 Take two streams as an example for illustration. According to the channel quality indicator (CQI) value fed back by the receiver, the coding and modulation scheme MCS is selected. The feedback CQI obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/22
Inventor 白伟金永赫
Owner BEIJING SAMSUNG TELECOM R&D CENT
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