CN109039414A - A kind of spatial polarizations modulator approach of spectral efficient - Google Patents

A kind of spatial polarizations modulator approach of spectral efficient Download PDF

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Publication number
CN109039414A
CN109039414A CN201810947152.0A CN201810947152A CN109039414A CN 109039414 A CN109039414 A CN 109039414A CN 201810947152 A CN201810947152 A CN 201810947152A CN 109039414 A CN109039414 A CN 109039414A
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China
Prior art keywords
modulation
antenna
spatial
subframe
polarization
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CN201810947152.0A
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Chinese (zh)
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王伶
刘峰
谢坚
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Priority to CN201810947152.0A priority Critical patent/CN109039414A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

The present invention provides a kind of spatial polarizations modulator approaches of spectral efficient, source coding and channel coding is successively carried out to transmitting information, obtain binary bits information, and it is divided into the data frame of regular length, every frame includes bay number subframe, antenna polarization status number subframe and order of modulation subframe；Spatial domain modulation, a selection piece antenna transmission data of activation are carried out using bay number subframe；Polarization modulation is carried out using antenna polarization status number subframe, a polarized state of selection activation antenna carries data；MPSK modulation is carried out using order of modulation subframe, the modulation symbol to be sent is selected, finally obtains spatial polarizations modulation symbol；Spatial polarizations modulation symbol is subjected to digital-to-analogue conversion and up-conversion, and the polarization sensitive antenna by activating is launched.Polarization domain information is introduced into spatial modulation system by the present invention, can be increased the channel capacity of spatial modulation system, be further increased spectrum efficiency.

Description

A kind of spatial polarizations modulator approach of spectral efficient
Technical field
The invention belongs to multiple antenna transmission technique fields, are related to a kind of spatial polarizations modulator approach.
Background technique
With the rapid development of radio communication service, requirement of the people to wireless communication rate is higher and higher.But it can benefit Frequency spectrum resource is limited, and has raising spectrum efficiency only, and the increasing wireless communication needs of people can just be met. With that is, multiple-input and multiple-output (Multiple Input Multiple Output, MIMO) technology with high-speed, big bandwidth, height The availability of frequency spectrum is suggested for target.However, due to synchronization and multi radio radio frequency link etc. between interference, antenna between mimo channel Problem causes mimo system complexity and cost to be continuously increased.For the above-mentioned limitation of mimo system, spatial modulation (Spatial Modulation, SM) technology comes into being.
Space-modulation technique is a kind of multiple antenna transmission technique, is passed by the difference of the characteristic of channel between different dual-mode antennas Pass information.In SM modulator, transmission information is divided into two parts: a part carries out traditional amplitude phase modulation in signal domain, Another part is modulated in spatial domain, and the optional sign period only selectively activates a transmission antenna transmission data.Space tune System processed still has the characteristics that high-speed and spectral efficient, it indexes and send modulation symbol common transport using transmission antenna Information.But so far, in spatial modulation system design, polarization information is not considered yet.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of spatial polarizations modulator approach of spectral efficient, will Polarization domain information is introduced into spatial modulation system, can be increased the channel capacity of spatial modulation system, be further increased frequency spectrum Efficiency.
The technical solution adopted by the present invention to solve the technical problems the following steps are included:
Step 1, sequence of binary digits obtain: successively carrying out source coding and channel coding to transmitting information and obtain two System bit information.
Step 2, frame format divide: it is log that the binary bits information of input, which is divided into regular length,2Nt+log2Np+ log2The data frame of M-bit, wherein NtFor transmission antenna array antenna array element number, NpFor the polarized state number of every antenna, M For digital modulation order, i.e., every frame includes log2NtThe bay number subframe of bit, log2NpThe antenna polarization status number of bit Subframe and log2The order of modulation subframe of M-bit.
Step 3, spatial polarizations modulation: bay number subframe determines NtWhich passed in root transmission antenna using root antenna Transmission of data, antenna polarization status number subframe determine the antenna N using activationpWhich polarized polarized state of rank carries data, adjusts Order subframe processed determines which symbol should be sent in M contrast glossary of symbols.
Data transmitting: spatial polarizations modulation symbol is carried out digital-to-analogue conversion and up-conversion, and passes through the pole of activation by step 4 Change sensitive antenna to launch.
The beneficial effects of the present invention are: spatial modulation system introduces polarization domain information, by the polarization of polarization sensitive antenna State transfer information, so that its spectrum efficiency is increased to the N of original systempTimes.
Detailed description of the invention
Fig. 1 is spatial polarizations modulator approach basic principle schematic；
Fig. 2 is spatial polarizations modulator approach flow chart.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and the present invention includes but are not limited to following implementations Example.
The present invention proposes that a kind of spatial polarizations modulator approach of spectral efficient, basic principle schematic are as shown in Figure 1. Source coding and channel coding is carried out to transmitting information first and obtains sequence of binary digits, then carries out physical layer framing, often log2Nt+log2Np+log2M-bit is a frame, then passes through data rate allocation unit, is divided into three road signals again, is utilized log2NtBit subframe carries out spatial domain modulation, and a selection piece antenna of activation utilizes log2NpBit subframe carries out polarization modulation, The polarized state of selection activation antenna, utilizes log2M-bit subframe carries out MPSK modulation, selects the modulation symbol to be sent, then Digital-to-analogue conversion and up-conversion are carried out to the symbol of MPSK modulation, launched finally by the polarization sensitive antenna of activation.
In the present embodiment, transmission antenna array includes 8 polarization sensitive antennas, i.e. Nt=8；Every polarization sensitive antenna has 8 kinds of polarized states, i.e. Np=8；Amplitude phase modulation is modulated using 8PSK, i.e. M=8.Fig. 2 is the detailed process of the implementation column Figure, specifically includes the following steps:
Step 1: source coding and channel coding is carried out to transmitting information (speech information), message sink coding is compiled using increment Code mode, channel coding are encoded using 1/2Turbo, export binary-coded digit sequence.
Step 2: physical layer framing is carried out to sequence of binary digits obtained in step 1, every 9bit is one effective Data frame, preceding 3bit are bay number subframe, and intermediate 3bit is antenna polarization status number subframe, and rear 3bit is order of modulation Frame.
Step 3: the data of framing are divided into three parts by data rate allocation unit:With
Step 4:It is modulated for airspace, an antenna activation, input is selected from 8 array element polarization sensitive arrays As shown in table 1 to antenna index mapping, if 3bit information currently entered is " 101 ", the 6th antenna is activated information；For polarization modulation, a kind of state carrying data are selected from 8 kinds of polarized states of activation antenna, input information to pole As shown in table 2, if 3bit information currently entered is " 001 ", the polarized state 2 for the antenna that is activated is for counting for the mapping of change state According to transmission；It is modulated for 8PSK, determines which symbol in 8 symbols to be sent is sent, input information to tune As shown in table 3, if 3bit information currently entered is " 011 ", the 4th symbol of 8PSK modulation symbol is sent out for symbol mapping processed It send.
Table 1 inputs information to antenna index mapping
Input information 000 001 010 011 100 101 110 111
Antenna index 1 2 3 4 5 6 7 8
Table 2 inputs information to the mapping of antenna polarization state
Input information 000 001 010 011 100 101 110 111
Polarized state index 1 2 3 4 5 6 7 8
Table 3 inputs information to modulation symbol mapping
Input information 000 001 010 011 100 101 110 111
Symbol mapping 1 2 3 4 5 6 7 8
Step 5: digital-to-analogue conversion and up-conversion are carried out to 8PSK modulation symbol by character rate, and pass through the polarization of activation Modulation antenna is launched.
In order to make those of ordinary skill in the art understand the present invention, and to the present invention have been described in detail, but can think Arrive, do not depart from claim of the invention it is covered in the range of can also make other change and modification, these variation It is within the scope of the present invention with modifying.

Claims (1)

1. a kind of spatial polarizations modulator approach of spectral efficient, it is characterised in that include the following steps:
Step 1 successively carries out source coding and channel coding to transmitting information, obtains binary bits information；
Binary bits information, is divided into the data frame of regular length by step 2, and every frame includes log2NtThe bay of bit Number subframe, log2NpThe antenna polarization status number subframe and log of bit2The order of modulation subframe of M-bit, wherein NtTo send day Linear array antenna array element number, NpFor the polarized state number of every antenna, M is digital modulation order；
Step 3 carries out spatial domain modulation, a selection piece antenna transmission data of activation using bay number subframe；Utilize antenna Polarized state number subframe carries out polarization modulation, and a polarized state of selection activation antenna carries data；Utilize order of modulation Frame carries out MPSK modulation, selects the modulation symbol to be sent, finally obtains spatial polarizations modulation symbol；
Spatial polarizations modulation symbol is carried out digital-to-analogue conversion and up-conversion, and passes through the polarization sensitive antenna of activation hair by step 4 It is shot out.
CN201810947152.0A 2018-08-20 2018-08-20 A kind of spatial polarizations modulator approach of spectral efficient Pending CN109039414A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106788638A (en) * 2017-02-27 2017-05-31 电子科技大学 A kind of spatial modulation transmission method for activating indefinite transmitting antenna
CN106788636A (en) * 2017-03-09 2017-05-31 重庆临菲电子科技有限公司 A kind of sky-code 2-d index modulation wireless commnication and communication means
WO2018031709A1 (en) * 2016-08-10 2018-02-15 Idac Holdings, Inc. Spatial modulation for next generation wireless systems
WO2018106063A1 (en) * 2016-12-09 2018-06-14 Samsung Electronics Co., Ltd. Multiplexing control information in a physical uplink data channel
CN108234102A (en) * 2018-01-11 2018-06-29 重庆邮电大学 A kind of SM-GFDM systems with low complex degree detection algorithm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018031709A1 (en) * 2016-08-10 2018-02-15 Idac Holdings, Inc. Spatial modulation for next generation wireless systems
WO2018106063A1 (en) * 2016-12-09 2018-06-14 Samsung Electronics Co., Ltd. Multiplexing control information in a physical uplink data channel
CN106788638A (en) * 2017-02-27 2017-05-31 电子科技大学 A kind of spatial modulation transmission method for activating indefinite transmitting antenna
CN106788636A (en) * 2017-03-09 2017-05-31 重庆临菲电子科技有限公司 A kind of sky-code 2-d index modulation wireless commnication and communication means
CN108234102A (en) * 2018-01-11 2018-06-29 重庆邮电大学 A kind of SM-GFDM systems with low complex degree detection algorithm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
POL HENAREJOS等: "Dual Polarized Modulation and Reception for Next Generation Mobile Satellite Communications", 《IEEE TRANSACTIONS ON COMMUNICATIONS》 *

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