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An array antenna MC-CDMA system up-link receiving method

A technology of MC-CDMA and receiving method, which is applied in the field of array antennas of MC-CDMA cellular mobile communication system, can solve the problems of frequency domain and space domain processing not being organically related, complex processing, etc.

Inactive Publication Date: 2007-12-26
BEIJING JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

The existing array antenna MC-CDMA system first performs frequency domain processing at the receiving end, and then performs air domain processing. The frequency domain and air domain processing are not organically related, and the processing is complicated.

Method used

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  • An array antenna MC-CDMA system up-link receiving method
  • An array antenna MC-CDMA system up-link receiving method

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Embodiment Construction

[0127] The method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0128] The method of the invention is applicable to any array antenna mobile communication system adopting MC-CDMA transmission scheme.

[0129] With reference to the array antenna MC-CDMA system uplink receiving structure block diagram of Fig. 1, the concrete steps of a kind of array antenna MC-CDMA system uplink receiving method comprise, to any user (k):

[0130] Step 1, the signal r received by the first array element of the array antenna 1 (t) respectively sent to L carrier signal separation modules (1-1-1), (1-2-1), ..., (1-L-1), to obtain the output signal x k，1，1 (t)=r 1 (t)(cos(ω 1 (t-τ k，l ))+sin(ω 1 (t-τ k，l ))), x k，2，1 (t)=r 1 (t)(cos(ω 2 (t-τ k，2 ))+sin(ω 2 (t-τ k，2 ))), ..., x k，L，1 (t)=r 1 (t)(cos(ω L (t-τ k，L ))+sin(ω L (t-τ k，L ))); At the same time, the signal r received by the second array element 2 (t) respectivel...

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Abstract

A receiving method of up - link in array antenna MC - CDMA system includes carrying out subcarrier separation to signal received by each array element in array antenna , carrying out despreading and matching filter treatment for each separated subcarrier signal for obtaining matched filter wave output of user , carrying out space domain combination for the same subcarrier belonging to the same user to obtain its subset gain , carrying out frequency domain combination to obtain its subset gain , deciding final decision variable of user signal for obtaining user decision result.

Description

technical field [0001] The invention belongs to the technical field of MC-CDMA cellular mobile communication system array antenna. Background technique [0002] CDMA is the most important technology in the third generation (3G) mobile communication, and multi-carrier modulation will be the key technology of the future broadband wireless transmission system. Combining multi-carrier technology with CDMA technology to form a multi-carrier CDMA system is one of the important directions for future mobile communication development. The combination of multi-carrier technology and CDMA technology mainly includes three main forms: multi-carrier CDMA (MC-CDMA), multi-carrier direct-sequence spread spectrum CDMA (multicarrier DS-CDMA) and multi-tone modulation CDMA (MT-CDMA). Among them, the MC-CDMA scheme is considered to be the most promising scheme among the three schemes because it can adopt frequency domain diversity and excellent performance, and it is also one of the most compe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/08H04B7/12
Inventor 杨维刘俊英陈俊仕程时昕
Owner BEIJING JIAOTONG UNIV
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