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Transmitting and receiving devices of spectrum division multi-address access system and uplink and downlink access system

A technology for a transmitting device and an access system is applied in the fields of transmitting and receiving devices, spectrum division multiple access uplink and downlink access systems, and multiple access transmission systems, and can solve the problem that CDD-OFDM technology cannot realize spatial division multiple access. And other issues

Inactive Publication Date: 2013-05-01
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a transmitting device and a receiving device of a spectrum division multiple access system based on a cyclic delay vector, which solves the problem that CDD-OFDM technology cannot realize space division multiple access

Method used

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  • Transmitting and receiving devices of spectrum division multi-address access system and uplink and downlink access system
  • Transmitting and receiving devices of spectrum division multi-address access system and uplink and downlink access system
  • Transmitting and receiving devices of spectrum division multi-address access system and uplink and downlink access system

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Embodiment 1

[0062] see figure 1 , figure 2 , Figure 4 , Figure 5 , the present invention discloses a transmitting device and a receiving device of a spectral division multiple access system based on a cyclic delay channelization vector.

[0063] The transmitting device includes a first spectrum division multiple access scheduling entity 2, 13 based on a cyclic delay channelization vector, at least one first spectrum division multiple access physical layer entity 3 based on a cyclic delay channelization vector, 14, 15, 16.

[0064] The first spectrum division multiple access scheduling entity 2, 13 based on the cyclic delay channelization vector includes a first allocation unit of the cyclic delay channelization vector and a first adaptive modulation unit based on the spectrum division multiple access channel . The first spectrum division multiple access physical layer entity based on the cyclic delay channelization vector includes a sequentially connected buffer unit, a coding and...

Embodiment 2

[0083] The invention discloses a transmitting and receiving device and method of a spectral division multiple access system based on a cyclic delay channelization vector. The spectrum division multiple access system based on the cyclic delay channelization vector of the present invention embeds an independent spectrum division multiple access scheduling based on the cyclic delay channelization vector in the media access control layer of the CDD-OFDM communication system Entity; at the same time, the spectrum division multiple access processing unit 9 and the spectrum division multi-user detector unit are respectively embedded in the physical layer of the transmitting and receiving devices of the CDD-OFDM communication system. The physical layer entity of the CDD-OFDM system embedded in the spectrum division multiple access processing unit 9 and the spectrum division multi-user detector unit interacts with the spectrum division multiple access scheduling entity based on the cycl...

Embodiment 3

[0102] This embodiment discloses a spectrum division multiple access uplink access system based on a cyclic delay channelization vector.

[0103] Such as Image 6 As shown, the spectrum division multiple access uplink access system based on cyclic delay channelization vector is composed of M user terminal transmitting devices described in the first embodiment and one base station receiving device described in the first embodiment. Image 6 Among them, 19 is the wireless channel.

[0104] Such as figure 1 As shown, the transmitting device of user m consists of the cyclic delay channelization vector-based spectrum division multiple access scheduling entity of end user m and the cyclic delay channelization vector-based spectrum division multiple access physical layer of terminal user m Entity composition.

[0105] Such as Figure 5 As shown, the base station receiving device is composed of the spectrum division multiple access scheduling entity based on the cyclic delay chann...

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Abstract

The invention discloses transmitting and receiving devices of a spectrum division multi-address access system and a spectrum division multi-address uplink and downlink access system. The transmitting device in the invention comprises a first spectrum division multi-address access modulating entity based on a circular delay channelizing vector and at least one first spectrum division multi-addressaccess physical layer entity based on the circular delay channelizing vector, wherein the first spectrum division multi-address access modulating entity based on the circular delay channelizing vector comprises a first circular delay channelizing vector allocation unit and a first self-adaptive modulation unit based on a spectrum division multi-address access channel; and the first spectrum division multi-address access physical layer entity based on the circular delay channelizing vector comprises a buffer unit, a coding and rate matching unit, an orthogonal amplitude modulation unit and a spectrum division multi-address access processing unit which are connected sequentially. By means of the invention, the problem that space division multi-address access can not be realized by the CDD-OFDM (circular delay diversity-orthogonal frequency division multiplexing) technology is solved. Meanwhile, the invention can be applied to the elimination of interference coordination in a multi-cell scene.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a multiple access transmission system, in particular to a transmitting and receiving device of a spectrum division multiple access system based on a cyclic delay vector; in addition, the invention also relates to a spectrum division multiple access uplink and downlink access system. Background technique [0002] As a multi-antenna diversity technology with good standard compatibility, cyclic delay diversity (Cyclic Delay Diversity, CDD) has greatly enhanced the existing standard Orthogonal Frequency Division Multiplexing (OFDM) technology, making it possible in Sufficient space diversity gain can be obtained in a diffusely rich wireless environment [Ref 1][Ref 2]. Cyclic delay processing can convert space diversity into frequency diversity, thus adding redundancy in the frequency domain of OFDM systems. Different from Space-Time Block Coding (STBC) [Reference 3] and Space-T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04B7/02
Inventor 郭海友胡宏林
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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