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Hard decision method using single antenna to solve double antenna space division multiplexing
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A space-division multiplexing and single-antenna technology, applied in the field of hard judgment, can solve the problem that a single receiving link cannot decode dual-antenna space-division multiplexing, and achieve the effect of less calculation
Inactive Publication Date: 2017-12-29
GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD
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[0016] The purpose of the present invention is to solve the above-mentioned defects in the prior art, and provide a hard decision method using a single antenna to solve the dual-antenna space-division multiplexing, so as to solve the problem that the single-receiving link cannot decode the dual-antenna space-division multiplexing, And a single receiving link can effectively reduce design complexity and equipment cost
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Embodiment 1
[0046] This embodiment discloses a hard decision method for demultiplexing dual-antenna space division multiplexing using a single antenna, which specifically includes:
[0047] S1, channel estimation step;
[0048] S2, a step of generating a reference constellation diagram;
[0051] In the channel estimation step, use the single-antenna receiving data to perform channel estimation on the two transmitting antennas according to the CRS of the two transmitting ports, and the channel estimation values are h Tx0 and h Tx1 , respectively represent the channel estimation of the receiving antenna Rx to the transmitting antenna Tx0, and the channel estimation of the receiving antenna Rx to the transmitting antenna Tx1, and the channel estimation relationship is as follows figure 2 shown.
[0052] These two channel estimates h Tx0 and h Tx1 , are all calculated from the LTE cell reference signal (Cell Re...
Embodiment 2
[0070] This embodiment discloses a hard decision method using a single antenna to solve dual-antenna space division multiplexing, such as Image 6 shown, including:
[0071] Step T1. Obtain air interface data, sample and filter the data at the frequency of the signal through the front-end receiver, and obtain the LTE downlink data received by the single antenna to be processed.
[0072] In step T2 and step T3, extract CRS signals for channel estimation of the two transmit antennas TX0 and TX1 according to the specific RB and symbol positions of TX port 0 and TX port 1 in the received LTE downlink data.
[0073]Step T4 and step T5, the channel estimation step, use the single-antenna received data to channel the two transmit antennas according to the CRS of the two transmit ports.
[0074] Step T7 is a step of generating a reference constellation diagram, based on the channel estimation generated in step T4 and step T5 and the ideal constellation diagram of the current modulati...
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Abstract
The invention discloses a hard decision method using a single antenna to solve double antenna space division multiplexing. The method is specifically as follows: performing sampling and filtering on air interface data to obtain LTE downlink data received by a to-be-processed single antenna; using single antenna received data to perform channel estimation on two transmitting antennas Tx0 and Tx1 according to the CRS of two transmitting ports, wherein the channel estimation values are respectively hTx0 and hTx1; generating a reference planisphere for the single antenna to solve double antenna space division multiplexing data according to the single antenna received data and the channel estimation of the two transmitting ports; separating to-be-demodulated LTE data from the LTE downlink data according to the cell configuration and resource allocation conditions; inputting the separated to-be-demodulated LTE data in the generated reference planisphere, judging the minimum distance from a reference constellation point in the reference planisphere to the to-be-demodulated data to obtain to-be-decoded hard bit data; and inputting the generated hard bits into a Turbo decoder for decoding, and finally obtaining the necessary encoded bits.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a hard decision method for demultiplexing two-antenna space division by using a single antenna. Background technique [0002] LTE (Long Term Evolution), as the fourth-generation mobile communication technology, has very mature and extensive commercial applications. One of the key technologies of the LTE is a multiple input multiple output (Multi InputMulti Output, MIMO) antenna technology. In the R10 version of the LTE protocol, there are 9 MIMO transmission modes (Transmission Mode, TM), among which TM3 is a dual-antenna space division multiplexing mode, which provides a MIMO link with a large throughput and takes stability into consideration. . [0003] The encoding process for LTE dual-antenna space division multiplexing in TM3 mode is as follows: figure 1 shown. First, the two encoded codeword data are scrambled by the scrambling module, and then according...
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L25/06H04L27/34H04L1/00
CPCH04L1/0057H04L25/0202H04L25/061H04L27/3483
Inventor 回海生付磊
Owner GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD
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