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Single-antenna data transmitting method and device

A data transmission method and a technology of a transmission device, which are applied in digital transmission systems, error prevention, electrical components, etc., can solve problems such as improving system robustness and inability to use diversity technology, so as to avoid blind detection, reduce implementation complexity, The effect of increasing speed

Active Publication Date: 2012-10-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the main purpose of the present invention is to provide a single-antenna data transmission method and device, which are used in wireless communication systems. Using the existing single-antenna data transmission method makes the terminal need to perform blind detection on the number of antennas, or cannot use diversity. Technology to improve the technical issues of system robustness

Method used

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  • Single-antenna data transmitting method and device

Examples

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Embodiment 1

[0043] figure 1 A schematic diagram of mapping between data symbols to be transmitted and available resources in Embodiment 1 of the single-antenna data transmission method provided by the present invention, figure 2 It is a schematic flow chart of the steps of the single-antenna data transmission method provided by the present invention. The method flow can be used for broadcast channels and other data transmission channels. The data symbols to be sent are: S 0 , S 1 ,...S N-1 , the single-antenna data transmission method provided in this embodiment is specifically:

[0044] Step 301, configure the data symbol S to be sent 0 , S 1 ,...,S N-1 In available resources R 0 , R 1 ,...,R N-1 The mapping method above, where N is the total number of subcarriers used to transmit the data symbols to be sent;

[0045] Assuming that the number of OFDM symbols used to transmit data symbols to be sent is M, and each OFDM symbol has P available subcarriers used to transmit data sym...

Embodiment 2

[0053] image 3 The data symbol to be transmitted and the

[0054] Schematic diagram of the mapping of available resources, assuming that the data symbol to be sent is: S 0 , S 1 ,...,S N-1 , then the implementation

[0055] The data transmission method of single antenna provided in the example is as follows:

[0056] Step 401. In this embodiment, it is determined in the available resource R in a time domain continuous manner k and R k+1 Map the data symbols to be sent in;

[0057] Suppose the number of OFDM symbols used to transmit data symbols to be sent is M, and each OFDM symbol has P available subcarriers used to transmit data symbols to be sent. Then the available resource is R 0 , R 1 ,...,R N-1 , where N=M*P, in this embodiment, two consecutive resources R k and R k+1 Map the data symbols to be sent in, R k Corresponding resource index k=p*M+m, where m is resource R k The index of the OFDM symbol used to transmit the data symbol to be sent, p is R k The ...

Embodiment 3

[0063] refer to figure 1 , assuming that the data symbol to be sent is: S 0 , S 1 ,...,S N-1 , then the single-antenna data transmission method provided by this embodiment is specifically, assuming that the number of OFDM symbols used to transmit data symbols to be transmitted is M, and each OFDM symbol has P available subcarriers used to transmit data symbols to be transmitted. Then the available resource is R 0 , R 1 ,...,R N-1 , where N=M*P, R k Corresponding resource index k=m*P+p, where m is resource R k The index of the OFDM symbol used to transmit the data symbol to be sent, p is R k The index of the subcarrier on the OFDM symbol used to transmit the data symbol to be sent. R k with R k+1 are two adjacent frequency domain resources, that is, two adjacent subcarriers on the same OFDM symbol used to transmit data symbols to be sent.

[0064] One of the differences between this embodiment and Embodiment 1 is that the slave and the data symbol S to be sent i Cor...

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Abstract

The invention discloses a single-antenna data transmitting method and a single-antenna transmitting device, which are used for solving the technical problems that the number of antennae needs to be subjected to blind test by a terminal or the system robustness cannot be improved by utilizing a diversity technology in the conventional single-antenna data transmitting method in a wireless communication system. According to the method and the device, symbols A+B and C+D are transmitted on two available resources including Rk and Rk+1 with continuous time domains and frequency domains, wherein the symbols A, B, C and D are selected from a data symbol set {+ / -Si, + / -Si+1} corresponding to the data symbol Si to be transmitted; and the four symbols inlcuding the A, the B, the C and the D, are in accordance with the condition of A.C*+B.D*=C.A*+D.B*=A.B*+C.D*=B.A*+D.C*=0. By adopting the single-antenna transmitting method provided by the invention, a receiving algorithm which is the same as the Alamouti coding transmission diversity scheme of two antennae can be used by the terminal, so that the blind test of the number of the antennae is avoided; the implementation complexity of the terminal is reduced; and the system access speed is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a single-antenna data sending method and device. Background technique [0002] When the terminal accesses the wireless communication system, it first detects the downlink synchronization channel, and completes signal detection, time synchronization and frequency offset correction. Then detect the broadcast channel (BCH, Broadcast CHannel), and obtain system information, including configuration information such as the identity of the base station or access point (AP, Access Point), the number of antennas used, and the like. Finally, the terminal completes the uplink time synchronization through the uplink synchronization channel, and completes the whole process of accessing the system. [0003] As can be seen from the above access process, the terminal does not know the number of antennas used by the AP until it successfully receives the broadcast channel. Therefore, the te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L1/00
Inventor 郁光辉郝鹏鲁照华梁春丽夏树强姜静
Owner ZTE CORP
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