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Adaptive generalized spatial modulation (AGSM) method and simplified method thereof

A generalized spatial modulation and adaptive technology, applied in the field of adaptive generalized spatial modulation method and its simplification

Inactive Publication Date: 2015-08-26
XI AN JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

The invention makes ASM more flexible on the antenna, improves the bit error rate performance of the GSM system, and also solves the problem of antenna combination selection in the adaptive space modulation system

Method used

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  • Adaptive generalized spatial modulation (AGSM) method and simplified method thereof
  • Adaptive generalized spatial modulation (AGSM) method and simplified method thereof
  • Adaptive generalized spatial modulation (AGSM) method and simplified method thereof

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Embodiment Construction

[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0048] see figure 1 , the adaptive generalized spatial modulation method of the present invention comprises the following steps:

[0049] Step 1: In a slowly changing fading system, the receiving end selects the antenna selection combination and the corresponding constellation modulation order suitable for the channel according to the channel state information and the constellation modulation order determined by the system, according to the AGSM algorithm .

[0050] The AGSM algorithm is: R ‾ = arg max R ∈ Ω d min , GSM 2 ( H ) obey ...

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Abstract

The invention discloses an adaptive generalized spatial modulation (AGSM) method and a simplified method thereof. Through the adaptive generalized spatial modulation method, different antenna combinations in GSM (Generalized Spatial Modulation) can use different constellation modulation orders more flexibly, and an optimal combination is selected through antennas to enhance the BER (Bit Error Rate) performance of a system. In LA-GSM, a plurality of system constellation modulation orders are simplified into two orders on the basis of AGSM, and an antenna combination number in the GSM is utilized fully. A total antenna number, unified time slot activation antenna number and a constellation modulation order are compromised flexibly according to system requirements. Compared with ordinary GSM, AGSM has the advantages that a certain performance gain is achieved in comparison to the GSM since an adaptive antenna selection algorithm is added under the same spectrum efficiency. The LA-GSM has a certain performance gain in comparison to the GSM under the same spectrum efficiency and antenna combination. When the total number of antennas in the LA-GSM is smaller than that of the GSM, the algorithm is used for adapting to the constellation modulation order. The error bit rate is also close to the GSM.

Description

technical field [0001] The invention belongs to the technical field of closed-loop feedback transmission in a multi-antenna wireless communication system, and in particular relates to an adaptive generalized space modulation method and a simplified method thereof. Background technique [0002] In recent years, MIMO technology, as the core technology of the new generation of mobile communication technology, also has its limitations, such as the high processing complexity of the system, the large overhead caused by multiple radio frequency links, the problem of inter-channel interference (ICI) and the synchronization problem between antennas (IAS). Spatial modulation (SM) only activates one transmit antenna for transmission in a time slot, and maps a part of bits to the antenna serial number, which solves the above-mentioned problems of the MIMO system. However, the requirement of SM on the number of antennas limits its development, and Generalized Spatial Modulation (GSM) em...

Claims

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Application Information

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IPC IPC(8): H04B7/04H04L1/06
CPCH04B7/0417H04B7/0452H04L1/0612
Inventor 陈志刚刘健伶
Owner XI AN JIAOTONG UNIV
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