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Receive coalition method, system and equipment

A technology for receiving data and transmitting equipment, applied in transmission systems, digital transmission systems, and preventing/detecting errors through diversity reception, etc., can solve the problems of limited system performance improvement and ineffective system performance improvement, and improve channel capacity and spectrum utilization, reduce frame error rate and bit error rate, and improve system performance

Inactive Publication Date: 2009-04-22
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0007] It can be seen that in the prior art, data retransmission is performed based on HARQ technology, and a group of data is transmitted at least twice by constellation recombination method and then received and combined at the receiving end, the soft bits demodulated from the received data symbols Information is merged, and based on bit-level combination, the system performance improvement is relatively limited, and the method of constellation reorganization has little effect on system performance improvement using bit-level reception combination, and there is still room for further improvement

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  • Receive coalition method, system and equipment
  • Receive coalition method, system and equipment
  • Receive coalition method, system and equipment

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Embodiment Construction

[0041] In the current mobile communication system based on the data retransmission receiving and combining method, for at least two transmissions of a set of data, the data symbols transmitted through the channel are individually eliminated at the receiving end, and then demodulated, and The demodulated soft bit information is decoded after CC combining or MRC combining to obtain received data. This method makes the improvement of system performance relatively low. The inventor believes that if at the receiving end, the data symbols transmitted through the channel at least twice are comprehensively processed by interference cancellation technology, symbol-level combination can be realized, and the combined After the data symbols are demodulated and decoded, the combined received data will be obtained, which will greatly improve the system performance. Furthermore, the embodiment of the present invention also proposes based on the existing constellation reorganization method: w...

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Abstract

The invention relates to the technical field of mobile communication, in particular to a receiving and combining technology. The embodiment of the invention provides a receiving and combining method, a system and a device thereof, which improve the system performance effectively. The receiving and combining method based on data retransmission comprises the following steps: the data symbols which carry out at least twice emitting to one group of data are received and buffered; after interference cancellation and symbol combination are carried out to the data symbols, the data symbols are demodulated and decoded, thus obtaining the combined receiving data. The receiving and combining system based on data retransmission comprises an emitting device and a receiving device. The embodiment of the invention provides an emitting device and a receiving device, and the embodiment of the invention also provides a receiving and combining method based on transmit diversity and a system thereof.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to the reception combination technology. Background technique [0002] The third generation mobile communication system (the 3rd Generation Mobile Communication, 3G) and the future fourth generation mobile communication system (the 4th Generation Mobile Communication, 4G), while high-speed data transmission, the requirements for reliability are also significantly improved , especially in harsh natural environments also require high reliability. In this context, Hybrid Automatic Repeat Request (HARQ) technology has become one of the key technologies to improve reliability. HARQ technology is based on Automatic Repeat Request (ARQ) technology and forward error correction. (Forward Error Correction, FEC) technology, if the receiving end verifies that the received data has an error through Cyclic Redundancy Check (CRC), it will request the data to be retransmitted,...

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Application Information

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IPC IPC(8): H04L1/18H04L1/00
CPCH04L1/1845H04L1/06
Inventor 吴涛朱胡飞赵印伟司宏杰葛绍伟
Owner HUAWEI TECH CO LTD
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