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Data detection method at the receiving end of space shift keying transmission system based on hierarchical detection

A space-shift keying and transmission system technology, applied in transmission systems, radio transmission systems, diversity/multi-antenna systems, etc., can solve the problem of increasing the complexity of the maximum likelihood detection algorithm at the receiving end, and achieve good performance and reduce complexity. degree of effect

Inactive Publication Date: 2017-05-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] However, the complexity of the maximum likelihood detection algorithm at the receiving end in the layered SSK modulation system increases significantly with the improvement of spectral efficiency
In the scenario of high spectral efficiency, the complexity of the receiving end becomes an important factor limiting the hierarchical SSK modulation technology

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  • Data detection method at the receiving end of space shift keying transmission system based on hierarchical detection
  • Data detection method at the receiving end of space shift keying transmission system based on hierarchical detection
  • Data detection method at the receiving end of space shift keying transmission system based on hierarchical detection

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Embodiment Construction

[0030] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figure 1 Shown: Hierarchical space shift keying system with N t root transmit antenna and N r The root receiving antenna, the transmitting end adopts the L-layer bit mapping method, and each layer performs M-dimensional space shift keying modulation. First, the input bit data is divided into length L log by layer mapping 2 A data block of M bits, for pairs of length L log 2 The data block of M adopts the bit mapping method of L layer, in which each layer log 2 M-bit data is subjected to M-dimensional space shift keying modulation, and finally forms a transmission signal S=[0...x at the sending end i ...x L ...x 1 ...0] T , where x i Map symbols for the modulation of the i-th layer. The transmitted signal S passes through N t Send N rThe received MIMO channel and Gaussian white noise channel arrive at the receiving en...

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Abstract

The invention discloses a method for detecting data at the receiving end of an air shift keying transmission system based on layered detection, comprising the following steps: the first step, establishing the receiving end model; the second step, simplifying the receiving end model; the third step, The transmitted data is demodulated through a layered detection algorithm. The data detection method of the receiving end of the space shift keying transmission system based on layered detection of the present invention, its bit error (BER) performance gradually approaches the optimal detection algorithm (ML) with the increase of the search radius, when the search radius is the transmitting end antenna When the number, the detection algorithm of the present invention is equivalent to the maximum likelihood detection algorithm. The algorithm calculates and sorts each layer so that the bit error rate performance close to the optimal detection algorithm can be obtained under a small search radius, so the present invention can greatly reduce the complexity of the algorithm at the receiving end while obtaining better performance Spend.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for detecting data at a receiving end of a space-shift keying transmission system based on layered detection. Background technique [0002] Multiple Input Multiple Output (MIMO) technology, as one of the key technologies in the future wireless communication field, greatly improves link reliability and system spectral efficiency (Spectrum Efficient, SE). One of the important MIMO technologies is space shift keying modulation technology (SSK: space shift keying). [0003] The space-shift keying modulation technology uniquely forms a mapping relationship between the input bit and the serial number of the transmitting antenna, that is, uses the transmission bit to select and activate the antenna with the corresponding serial number. In each time slot, only one transmit antenna carries information, and other antennas are idle. The receiving end adopts the maximum likel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/08H04L1/06
Inventor 方舒李磊岳宗迪巫健李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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