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Signal detection method applied to MIMO system and based on generalized spatial modulation

A generalized spatial modulation and signal detection technology, which is applied in the multi-input multi-output communication system, generalized spatial modulation and lattice reduction technology fields, can solve the problems of high algorithm complexity and poor OB-MMSE performance, and achieves high computational complexity. , the effect of improving performance

Inactive Publication Date: 2014-11-26
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0006] The present invention proposes a signal detection method based on generalized spatial modulation in a MIMO system, which can solve the problems of poor OB-MMSE performance under high-dimensional transmitting antennas in the prior art and high algorithm complexity using traditional maximum likelihood methods

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  • Signal detection method applied to MIMO system and based on generalized spatial modulation
  • Signal detection method applied to MIMO system and based on generalized spatial modulation
  • Signal detection method applied to MIMO system and based on generalized spatial modulation

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Embodiment Construction

[0031] The technical solution of the present invention will be described in detail below in combination with the embodiments and the accompanying drawings.

[0032] The channel model selected in this embodiment is a Rayleigh flat fading channel.

[0033] S1, such as figure 1 As shown, at the sending end, the bit encoding is performed according to the combination of transmitting antennas and the transmitting constellation symbols, and the number of transmitted bits is obtained as Among them, N u is the number of active antennas, m l is the number of bits corresponding to the antenna combination, m s is the number of bits corresponding to the constellation symbol, and the number of antenna combinations is N c ′ = N t N u ...

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Abstract

The invention belongs to the technical field of communication, and particularly relates to a Multiple Input Multiple Output (MIMO) communication system and a Generalized Spatial Modulation (GSM) and Lattice Reduction (LR) technology. According to a signal detection method applied to the MIMO system and based on GSM, bit encoding is conducted at the transmitting end according to a transmitting antenna combination and a transmitting constellation symbol, and a channel matrix is processed by means of the LR algorithm to obtain a demodulated bit. Compared with the prior art, the method has the advantages that the problem of high algorithm complexity is effectively solved, and OB-MMSE performance is improved under the condition of a high-dimensional transmitting antenna.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a multiple input multiple output (Multiple Input Multiple Output, MIMO) communication system, generalized spatial modulation (Generalized Spatial Modulation, GSM) and lattice reduction (Lattice Reduction, LR) technology. Background technique [0002] The MIMO system greatly improves system capacity and spectrum utilization, enabling the system to transmit data at a higher rate without increasing bandwidth and transmit power. MIMO-based GSM technology, the bits it transmits are composed of two parts mapped by the antenna combination and the constellation point symbols corresponding to the transmission antennas, which reduces the number of required transmission antennas while improving spectrum utilization. [0003] However, the signal detection of this kind of communication system is indeed relatively difficult. To solve the above problems, there are generally tw...

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Application Information

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IPC IPC(8): H04B7/04
Inventor 王兆瑞肖悦龚丽莎邵晋梁何旭
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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