Method and device for detecting SC (single carrier) modulation and OFDM (orthogonal frequency division multiplexing) modulation

A technology of single-carrier modulation and orthogonal frequency division, applied in multi-carrier systems, multi-frequency code systems, etc., can solve the problems of increasing signaling overhead and buffering large data

Active Publication Date: 2015-07-01
南京易太可通信技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The disadvantage of this method is that a large amount of data needs to be buffered, because the receiving end needs to obtain the indication information of the signaling field before processing the data field. In addition, this method adds additional signaling overhead

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  • Method and device for detecting SC (single carrier) modulation and OFDM (orthogonal frequency division multiplexing) modulation
  • Method and device for detecting SC (single carrier) modulation and OFDM (orthogonal frequency division multiplexing) modulation
  • Method and device for detecting SC (single carrier) modulation and OFDM (orthogonal frequency division multiplexing) modulation

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Embodiment Construction

[0036] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0037] The technology of the present invention can be used in various broadband wireless communication systems, and the realized wireless nodes can include access points or access terminals. Examples of such communication systems include millimeter wave wireless multiple-input multiple-output communication systems and the like.

[0038] The operation steps of the present invention will be detailed below by taking the mixed carrier mechanism transmission under the millimeter wave wireless local area...

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Abstract

The invention discloses a method and a device for detecting SC (single carrier) modulation and OFDM (orthogonal frequency division multiplexing) modulation. The method and the device for detecting the SC modulation and the OFDM modulation are used to quickly distinguish the SC modulation from the OFDM modulation in a system where the SC modulation and the OFDM modulation coexist, and if a data field carried by a physical protocol data unit adopts the OFDM modulation, a transmitting end performs phase rotation operation on a signaling field. After a receiving end performs equilibrium operation, a signal carrier modulation mode is judged by detecting energy of the signaling field, and if a detected result is that the OFDM modulation is adopted, additional inverse phase rotation is performed on the signaling field, and then signaling information is obtained by processing a basic baseband signal. Compared with the prior art, the method for detecting the SC modulation and the OFDM modulation can reduce detection time delay on the premise of not needing additional signaling reminding, facilitates saving of expense of a buffer area, and reduces system complexity and cost.

Description

technical field [0001] The invention relates to a method and device for detecting single-carrier modulation (SC) and orthogonal frequency-division multiplexing (OFDM), which is suitable for quickly distinguishing between single-carrier modulation and orthogonal frequency-division multiplexing modulation The method and device for SC modulation and OFDM modulation belong to the technical field of wireless communication. Background technique [0002] Compared with Orthogonal Frequency Division Multiplexing (OFDM: Orthogonal Frequency Division Multiplexing) modulation, single carrier (SC: Single Carrier) modulation has the advantage of low peak-to-average ratio, while still having receiver complexity and communication system similar to OFDM modulation performance. Therefore, SC modulation is widely used in mmWave communication systems. However, the complexity of precoding and multi-user in the SC modulation system is relatively high, while the OFDM modulation system can carry ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L27/34
Inventor 何世文吴波王海明黄永明杨绿溪洪伟张军江华
Owner 南京易太可通信技术有限公司
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