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Space shift keying transmission system receiving end data detection method based on layered detection

A space-shift keying, transmission system technology, applied in diversity/multi-antenna systems, error prevention/detection through diversity reception, space transmit diversity, etc., can solve the problem of increasing the complexity of the maximum likelihood detection algorithm at the receiving end

Inactive Publication Date: 2014-07-30
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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  • Space shift keying transmission system receiving end data detection method based on layered detection
  • Space shift keying transmission system receiving end data detection method based on layered detection
  • Space shift keying transmission system receiving end data detection method based on layered 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] Such as 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...

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Abstract

The invention discloses a space shift keying transmission system receiving end data detection method based on layered detection. The method includes the following steps that firstly, a receiving end model is determined; secondly, the receiving end model is simplified; thirdly, sent data are demodulated through a layered detected algorithm. According to the space shift keying transmission system receiving end data detection method based on layered detection, the bit error rate (BER) performance of the method is gradually similar to that of an optimal detection (ML) algorithm along with the increase of the search radius, and when the search radius is equal to the number of antennas at the sending end, the detection algorithm is equivalent to a maximum likelihood detection algorithm. Calculation ranking is conducted on each layer through the algorithm, the bit error rate performance of the method can be similar to that of the optimal detection algorithm in the small search radius, and therefore the method has the advantages that good performance can be acquired, and the complexity of the algorithm at the receiving end is greatly lowered.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/08H04L1/06
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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