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Wireless receiving and transmitting method and equipment thereof

A technology of wireless transmission and wireless reception, applied in the direction of preventing/detecting errors, signal channels, etc. through diversity reception, which can solve the problems of small capacity increment and failure to make full use of wireless resources, so as to reduce upgrade costs and achieve diversification. , to achieve the effect of quality of service

Active Publication Date: 2009-12-02
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

In the case of high signal-to-noise ratio (Signal Noise Ratio, referred to as "SNR"), this single-layer transmission method works at the high SNR operating point of the channel capacity, and the capacity increase obtained by increasing the unit SNR is very small, which cannot fully Utilize valuable wireless resources

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  • Wireless receiving and transmitting method and equipment thereof
  • Wireless receiving and transmitting method and equipment thereof
  • Wireless receiving and transmitting method and equipment thereof

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Embodiment Construction

[0049] In the following description, numerous technical details are set forth in order to provide the reader with a better understanding of the present application. However, those skilled in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the claims of the present application can be realized.

[0050] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] First, the principle of multi-layer communication in each embodiment of the present invention will be described.

[0052] like figure 2 shown, figure 2 (a) shows that under OFDMA communication, each time-frequency grid point can be scheduled independently, and each time-frequency grid point has multiple layers of data...

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Abstract

The invention belongs to the field of wireless communication and discloses a wireless receiving and transmitting method and equipment thereof, which can utilize the same time-frequency source for providing higher channel capacity, wherein multichannel data are loaded in layers with different levels of signal to noise ratios at a transmitting end and received at a receiving end in a mode of serial interference cancellation. The levels of the signal to noise ratios needed by different layers can be realized by controlling the code rate, the modulation mode and the transmitting power magnitude of codes. The data of different layers can belong to different data flows of the same user equipment for realizing multiplexing, can also belong to different user equipment for realizing multiple access and can be acquired by shunting the same data flow. The data needing layered transmission can be firstly randomized.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the sharing technology of time-frequency resources. Background technique [0002] Wireless communication technology brings convenience of mobility to people, but compared with wired communication, a major problem of wireless communication is limited wireless resources. With the increasing demand for high-bandwidth multimedia applications, how to make full use of the limited The problem of wireless resources is also increasingly prominent. [0003] In order to transmit more information with less resources, Orthogonal Frequency Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (Single Carrier-Frequency Division Multiple Access, referred to as "SC-FDMA"), and multi-subband orthogonal frequency division multiple access (Multi-Band Orthogonal Frequency Multiple Access, referred to as "MB-OFDMA") and other systems. In these systems, system resour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/02H04L1/06
Inventor 张小东简相超陈垚吴涛
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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