CN103023619A - Wireless communication system link self-adaption transmission method - Google Patents
Wireless communication system link self-adaption transmission method Download PDFInfo
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Abstract
The invention discloses a wireless communication system link self-adaption transmission method. The wireless communication system link self-adaption transmission method includes two parts, namely, a physical-layer transmission technology configuration method of link self-adaption modulation and coding and the like on the basis of average signal to noise ratio and signal to noise ratio difference factor, and an emission format configuration method applicable to multi-antenna system such as MIMO (multiple input multiple output) communication system on the basis of average signal to noise ratio and average multi-diameter relative energy factor. The wireless communication system link self-adaption transmission method can be used for places where quick link self-adaption technology is inapplicable, not only can be used for a single-antenna system but multi-antenna system and is lower in feed frequency as compared with that of the quick link self-adaption transmission method, load of the system can be reduced and meanwhile, performance of the self-adaption communication system can be effectively improved.
Description
Technical field
The present invention relates to communication system, especially relate to a kind of mobile radio system link self-adaption transmission method.
Background technology
The wireless communication system link adaptive technique is adjusted the data rate that emission parameter (such as modulation and coding etc.) improves wireless system by self adaptation.Be applied to the link adaptation techniques of a single aerial system through years of researches and practice, obtained a lot of achievements, but for emerging multiaerial system, refer generally to multiple-input, multiple-output (MIMO) system, it is spatial selectivity that link adaptation techniques need to be introduced new self adaptation dimension, so that existing link adaptation techniques faces the challenge.In typical wireless communication system, the signal of receiver end is made of same a plurality of the copying that transmits through the different Path generations in the communication environments, these waveforms are superimposed and strengthen or the fluctuation of attenuated signal intensity on time dimension, are referred to as time selectivity.In wideband transmit, the possibility is-greater-than symbol cycle in the relative time delay of different propagation paths, cause the channel of frequency domain to rise and fall, this fading effect is called frequency selectivity.When transmitter or receiver dispose a plurality of antennas, the signal that different array elements receive can experience independently decline, can delineate with spatial selectivity the channel of this type.Spatial selectivity depends on physical features (such as the spatial distribution of waveform) and the array characteristic (such as antenna distance, cross polarization and antenna pattern) of channel simultaneously, the spatial distribution of multipath has determined the power angular spectrum of channel, usually describes with variance or the angle spread of angular spectrum.In the reality system, improve link performance by time, frequency and the spatial selectivity of developing mimo channel.Wireless system such as the standards such as IEEE 802.11n, IEEE 802.16e, 3GPP Long Term Evolution of current employing MIMO technology have all defined different modulation and code set.In addition, people are also studying the Space Time Coding mechanism of mimo system under different modulating and coding, but these methods all are not suitable for link circuit self-adapting, and are especially difficult on the assessment link performance.
Link adaptation techniques can be divided into two kinds of rapid link self adaptation and slow speed link self adaptations, and a very long time before this, link adaptation techniques refers to the rapid link self adaptation always.The rapid link adaptive technique is followed the tracks of the instant channel variation that multipath fading causes, receiver is estimated instant signal to noise ratio (signal-to-noise, SNR) and to receiver feed back optimum constellation signaling, pass through self adaptation, system can improve the emission throughput under good channel condition, simultaneously can guaranteed performance under bad channel condition.But because the rapid link adaptive technique is the self adaptation that instant channel is changed, so there is higher feedback velocity, particularly when channel was very unstable, receiver may be frequently to the feedback of transmitter, has brought larger burden to system.Existing slow speed link adaptive technique is followed the tracks of the average of multipath fading, thereby has a lower feedback velocity, but for growing MIMO communication system, at present also not and spatial selectivity well combine, can not be applicable to general mobile radio system.
Summary of the invention
In view of this, the present invention is for solving the problems of the technologies described above, comprise average signal-to-noise ratio by definition, the signal to noise ratio deviation factors, the channel quality parameter such as the average multipath relative energy factor, a kind of wireless communication system link adaptive transmission method based on channel quality parameter has been proposed, can be used for the inapplicable occasion of rapid link adaptive technique, can be applied to a single aerial system, also can be applicable to multiaerial system, relatively has lower feedback frequency with the rapid link adaptive transmission method, system burden can be reduced, the performance of adaptive communication system can be effectively improved simultaneously.
For achieving the above object, the invention provides a kind of mobile radio system link self-adaption transmission method, comprise the following steps:
(1) obtain channel quality parameter, described channel quality parameter comprises one or more in average signal-to-noise ratio, signal to noise ratio deviation factors, the average multipath relative energy factor;
Described average signal-to-noise ratio is the arithmetic mean of repeatedly measuring the gained signal to noise ratio in section preset time; Described signal to noise ratio deviation factors is
, wherein M is the measurement total degree in section preset time,
Be the signal to noise ratio of the gained of the i time measurement, ASNR is average signal-to-noise ratio;
The described average multipath relative energy factor is the arithmetic mean of the multipath relative energy factor in section preset time, and the described multipath relative energy factor is one of following numerical value:
(a) signal that receives is the ratio of the gross power in the power in strong path and all the other each paths or all paths, or the signal that the receives ratio of the significant level absolute value sum in the significant level absolute value in strong path and all the other each paths or all paths;
(b) signal that receives is the power and time ratio of the power in strong path in strong path, or the signal that receives the significant level absolute value and time ratio of the significant level absolute value in strong path in strong path;
(2) according to channel quality parameter, carry out the configuration of physical layer transmission technology, described physical layer transmission technology comprises one or more set of the communication transmission technologies such as modulation system, coded system;
Also can further comprise the step of launching the configuration of form according to channel quality parameter, described emission form comprises one or more combination of diversity, the communication transmission technology such as multiplexing.
The configuration of described physical layer transmission technology comprises the following steps: to set one or more average signal-to-noise ratio thresholdings, and the channel of wireless communication system is divided into two or more channel statuss, respectively configures physical layer transmission technology set by the size of average signal-to-noise ratio.
Described respectively configures physical layer transmission technology set also comprises: set a signal to noise ratio deviation thresholding, for every kind of channel status, when signal to noise ratio deviation factors during greater than signal to noise ratio deviation thresholding, adopt in the described physical layer transmission technology set lower-order number modulation system and (or) inefficient coded system.
Described configuration of launching form according to channel quality parameter comprises the following steps:
(1) sets one or more average multipath relative energy factor thresholdings, and one or more antenna amount thresholdings, according to the population size of the antenna of the average multipath relative energy factor in some threshold ranges of the signal that receives, carry out channel status and divide.
(2) set one or more average signal-to-noise ratio thresholdings, set a plurality of emission forms, according to size and the residing channel status of average signal-to-noise ratio the emission form is set.
Preferably, described mode of carrying out the channel status division is: set the average multipath multipath energy factor the first thresholding and the second thresholding, set the first antenna amount thresholding, the second antenna amount thresholding, third antenna quantity thresholding, combined situation according to the average multipath relative energy factor of all reception antennas is divided into one of following kind with channel status:
(a) during more than or equal to the first antenna amount thresholding, be the first channel status more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the first thresholding when receiving the average multipath relative energy factor;
(b) when receiving the average multipath relative energy factor more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the first thresholding during less than the first antenna amount thresholding and more than or equal to the second antenna amount thresholding, perhaps during more than or equal to third antenna quantity thresholding, be the second channel state less than the average multipath relative energy factor the first thresholding and more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the second thresholding when receiving the average multipath relative energy factor;
(c) during less than the second antenna amount thresholding, be the 3rd channel status more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the first thresholding when receiving the average multipath relative energy factor;
Preferably, described size and residing channel status mode that the emission form is set according to average signal-to-noise ratio is: set average signal-to-noise ratio the first thresholding and the second thresholding, will launch format configuration according to the size of average signal-to-noise ratio and residing channel status is one of following manner:
(a) for the first channel status, when average signal-to-noise ratio during less than average signal-to-noise ratio the first thresholding, be emission form A; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the first thresholding and less than average signal-to-noise ratio the second thresholding, be emission form A or emission form B; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the second thresholding, be emission form B;
(b) for the second channel state, when average signal-to-noise ratio during less than average signal-to-noise ratio the first thresholding, be emission form A; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the first thresholding and less than average signal-to-noise ratio the second thresholding, be emission form B or emission form C; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the second thresholding, be emission form B or emission form C;
(c) for the 3rd channel status, when average signal-to-noise ratio during less than average signal-to-noise ratio the first thresholding, be emission form A; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the first thresholding and less than average signal-to-noise ratio the second thresholding, be emission form B or emission form C; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the second thresholding, be emission form C;
Described emission form A mainly provides diversity, and described emission form C mainly provides multiplexing, and described emission form B provides diversity and multiplexing simultaneously.
Preferably, described a plurality of average signal-to-noise ratio thresholding is two of 15dB and 25dB, described physical layer transmission technology set comprises { 4-QAM, CTC-1/2}, { 16-QAM, CTC-2/3}, { 64-QAM, CTC-3/4}, described signal to noise ratio deviation thresholding is 2dB, the physical layer transmission technology set is configured to:
(1) when average signal-to-noise ratio during less than 15dB, adopts { 4-QAM, CTC-1/2} transmission technology set;
(2) when average signal-to-noise ratio during more than or equal to 15dB and less than 25dB, if the signal to noise ratio deviation factors is less than or equal to 2dB, then adopt { 16-QAM, CTC-2/3} transmission technology set, if the signal to noise ratio deviation factors is greater than 2dB, then adopt { 4-QAM, CTC-1/2} transmission technology set;
(3) when average signal-to-noise ratio during more than or equal to 25dB, if the signal to noise ratio deviation factors is less than or equal to 2dB, then adopt { 64-QAM, CTC-3/4} transmission technology set, if the signal to noise ratio deviation factors, then adopts { 16-QAM, CTC-2/3} transmission technology set greater than 2dB.
Preferably, described average signal-to-noise ratio the first thresholding is 15dB, and described average signal-to-noise ratio the second thresholding is 25dB.
Beneficial effect of the present invention:
(1) the present invention proposes a single aerial system slow speed link adaptive technique of a kind of average signal-to-noise ratio and the combination of signal to noise ratio deviation factors, the rapid link adaptive technique has lower feedback velocity relatively, can reduce the burden of system, the technology of the present invention is introduced the judgement that the signal to noise ratio deviation factors is assisted the control transmission technology, and relatively existing slow speed link adaptive technique is more accurate, reasonable;
(2) the present invention utilizes the average multipath relative energy factor and average signal-to-noise ratio to combine to determine the emission form of communication system, has proposed to be applicable to the slow speed link adaptive technique of multiaerial system, is applicable to general mobile radio system.
Method proposed by the invention can be used as one independent partly integratedly to be advanced in the mobile communication system, improves the performance of mobile communication system.
Description of drawings
Fig. 1, the flow chart of the wireless communication system link adaptive transmission method that the present invention proposes;
Fig. 2 is based on the communication system link adaptive technique schematic diagram of channel quality parameter;
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, a kind of wireless communication system link adaptive transmission method provided by the invention, formed by two parts, namely based on physical layer transmission technology adaptive configuring methods such as the modulation of average signal-to-noise ratio ASNR and signal to noise ratio deviation factors Bias_SNR, codings, and based on the emission format collocation method of average signal-to-noise ratio ASNR and average multipath relative energy factors A MRE.The former is for technology such as the modulation of determining the communication system use and codings, and the latter chooses suitable emission form (also can be described as emission matrix) mainly for the spatial selectivity of communication system.
As shown in Figure 1, a kind of wireless communication system link adaptive transmission method provided by the invention comprises the following steps:
(1) obtain channel quality parameter, channel quality parameter comprises average signal-to-noise ratio ASNR, signal to noise ratio deviation factors Bias_SNR, average multipath relative energy factors A MRE.
Average signal-to-noise ratio is the arithmetic mean of repeatedly measuring the gained signal to noise ratio in section preset time, supposes to have carried out within this time period to measure for M time and calculates, and each measurement is calculated the snr value that obtains and is
, then average signal-to-noise ratio is
The signal to noise ratio deviation factors is defined as:
The average multipath relative energy factor is the arithmetic mean of the multipath relative energy factor in section preset time, is used for describing the mean value of multipath relative energy factor M RE on multipath fading, is specially one of following numerical value:
(a) signal that receives is the ratio of the gross power in the power in strong path and all the other each paths or all paths, or the signal that the receives ratio of the significant level absolute value sum in the significant level absolute value in strong path and all the other each paths or all paths.
(b) signal that receives is the power and time ratio of the power in strong path in strong path, or the signal that receives the significant level absolute value and time ratio of the significant level absolute value in strong path in strong path.
(2) according to channel quality parameter, carry out the configuration of physical layer transmission technology, the physical layer transmission technology comprises the set of the communication transmission technologies such as modulation system, coded system, the configuration mode of physical layer transmission technology is specially:
The variations situation of signals transmission is described with average signal-to-noise ratio ASNR, the average signal-to-noise ratio ASNR that is in varying level has represented several different channel status, and every kind of channel status uses the physical layer transmission technology such as different modulation and coding that signal is processed rear transmission.Definition
(
) be the average signal-to-noise ratio thresholding, definition
(
) be i kind channel status, definition
(
) be i class transmission technology set, each class transmission technology set-inclusion the concrete physical layer transmission technology used of system such as modulation, coding etc.When the value of average signal-to-noise ratio ASNR is lower than
, we think that channel is in the 1st kind of channel status C
1, ASNR is in when average signal-to-noise ratio
With
(
) between the time, we think that current channel is in (i+1) and plants channel status, when the value of average signal-to-noise ratio ASNR is higher than
, channel then is in (L+1) and plants channel status; Corresponding each channel status
, we think that system should adopt the technology of stipulating in the i class physical layer transmission technology set, it should be noted that here choosing of transmission technology set not only depend on average signal-to-noise ratio ASNR, also need to consider simultaneously signal to noise ratio deviation factors Bias_SNR.When signal to noise ratio deviation factors Bias_SNR greater than a certain signal to noise ratio deviation thresholding
The time, we consider to adopt comparatively conservative transmission technology, namely adopt the modulation of lower-order number and/or inefficient coding.For example, we define
,
Be two average signal-to-noise ratio thresholdings,
,
,
Be three kinds of channel statuss,
,
,
Be three class physical layer transmission technology sets, wherein
,
,
,
So:
(1) as average signal-to-noise ratio ASNR during less than 15dB, judges that channel status is
, adopt
The transmission technology set;
(2) as average signal-to-noise ratio ASNR during more than or equal to 15dB and less than 25dB, judge that channel status is
If signal to noise ratio deviation factors Bias_SNR is less than or equal to signal to noise ratio deviation thresholding
The time, adopt
The transmission technology set is if signal to noise ratio deviation factors Bias_SNR is greater than signal to noise ratio deviation thresholding
The time, adopt
The transmission technology set.
(3) as average signal-to-noise ratio ASNR during more than or equal to 25dB, judge that channel status is
If signal to noise ratio deviation factors Bias_SNR is less than or equal to signal to noise ratio deviation thresholding
, adopt
The transmission technology set is if signal to noise ratio deviation factors Bias_SNR is greater than signal to noise ratio deviation thresholding
The time, adopt
The transmission technology set.
(3) according to channel quality parameter, launch the configuration of form, the emission form comprises the combination of diversity, the communication transmission technology such as multiplexing.
Present embodiment is considered one
The MIMO(multiple-input, multiple-output) wireless communication system,
With
Be respectively number of transmit antennas and reception antenna number, use three kinds of emission forms to comprise emission form A, emission form B and emission form C.The emission form A provide diversity, and the emission form C provide multiplexing, and emission form B takes into account diversity and multiplexing.Because each root reception antenna all can receive multipath signal independently, therefore, the average multipath relative energy factor of multipath signal that can every antenna reception of measurements and calculations
, set average multipath relative energy factor thresholding
,
, the emission format configuration is as follows:
(1) carrying out channel status divides.
(a) when
In the root reception antenna, receive the average multipath relative energy factor
More than or equal to average multipath relative energy factor thresholding
The number of antenna of signal more than or equal to setting the antenna amount thresholding
The time, channel status is CS1;
(b) when
In the root reception antenna, receive the average multipath relative energy factor
More than or equal to average multipath relative energy factor thresholding
The number of antenna of signal less than setting the antenna amount thresholding
And more than or equal to setting the antenna amount thresholding
The time, perhaps ought receive the average multipath relative energy factor
Less than average multipath relative energy factor thresholding
And more than or equal to average multipath relative energy factor thresholding
The number of antenna of signal more than or equal to setting the antenna amount thresholding
The time, channel status is CS2;
(c) when
In the root reception antenna, receive the average multipath relative energy factor
More than or equal to average multipath relative energy factor thresholding
The number of antenna of signal less than setting the antenna amount thresholding
The time, channel status is CS3.
(2) set average signal-to-noise ratio thresholding Th1, Th2, determine emission format configuration under different average signal-to-noise ratios and the different channels state according to following table.
Mimo wireless communication system emission format configuration table under the table 1. different channels state
| Channel status | ASNR is less than thresholding Th1 | ASNR is more than or equal to thresholding Th1 and less than thresholding Th2 | ASNR is more than or equal to thresholding Th2 |
| CS1 | Emission form A | Emission form A or B | Emission form B |
| CS2 | Emission form A | Emission form B or C | Emission form B or C |
| CS3 | Emission form A | Emission form B or C | Emission form C |
In table 1, when two kinds of possible selections occurring, we can be from paying the utmost attention to link throughput or the angle of transmission reliability, for example, when channel status is CS2, if average signal-to-noise ratio ASNR is during more than or equal to average signal-to-noise ratio thresholding Th1 and less than average signal-to-noise ratio thresholding Th2, the emission form can be chosen emission form B or emission form C, at this moment, further, if when paying the utmost attention to the link throughput, select emission form C, if when paying the utmost attention to transmission reliability, select emission form B.
Present embodiment is further considered one
MIMO (multiple-input, multiple-output) mobile radio system is described in detail, and the emission form uses matrix notation, wherein the line display antenna sequence number of matrix
, matrix column represents to launch symbol time
, matrix entries is illustrated in symbol time
Internal antenna
The signal code of upper emission, MIMO mobile radio system for 4 transmitting antennas, the emission form of A, B, three kinds of different transmission rates of C is provided, under different channel conditions, has selected neatly different transmission meanss, thereby realized the overall balance of system transmissions performance and transmission rate.
Emission form A(matrix A):
Emission form B(matrix B):
Emission form C(Matrix C):
When configuration emission form, the average multipath relative energy factor of every antenna of measurements and calculations
So:
(1) when receiving the average multipath relative energy factor
More than or equal to average multipath relative energy factor thresholding
The number of antenna of signal equal to set antenna amount
The time, channel status is CS1;
(2) when receiving the average multipath relative energy factor
More than or equal to average multipath relative energy factor thresholding
The number of antenna of signal less than setting antenna amount
And more than or equal to setting antenna amount
The time, perhaps receive the average multipath relative energy factor
Less than average multipath relative energy factor thresholding
And more than or equal to average multipath relative energy factor thresholding
The number of antenna of signal more than or equal to setting antenna amount
The time, channel status is CS2;
(3) when receiving the average multipath relative energy factor
More than or equal to average multipath relative energy factor thresholding
The number of antenna of signal less than setting antenna amount
The time, channel status is CS3.
The emission format configuration is as shown in table 2:
Mimo wireless communication system emission format configuration table under the table 2. different channels state
| Channel status | ASNR less than Th1 (=15dB) | ASNR more than or equal to Th1 (=15dB) and less than Th2 (=25dB) | ASNR more than or equal to Th2 (=25dB) |
| CS1 | Matrix A | Matrix B | Matrix B |
| CS2 | Matrix A | Matrix B | Matrix C |
| CS3 | Matrix A | Matrix B | Matrix C |
The below only statement for by preferred embodiment main principle of the present invention and spirit being carried out; be not limited to the present invention; for a person skilled in the art; the present invention can have various modifications and variations; all any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a wireless communication system link adaptive transmission method is characterized in that, comprises the following steps:
(1) obtain channel quality parameter, described channel quality parameter comprises one or more in average signal-to-noise ratio, signal to noise ratio deviation factors, the average multipath relative energy factor;
Described average signal-to-noise ratio is the arithmetic mean of repeatedly measuring the gained signal to noise ratio in section preset time; Described signal to noise ratio deviation factors is
, wherein M is the measurement total degree in section preset time,
Be the signal to noise ratio of the gained of the i time measurement, ASNR is average signal-to-noise ratio;
The described average multipath relative energy factor is the arithmetic mean of the multipath relative energy factor in section preset time, and the described multipath relative energy factor is one of following numerical value:
(a) signal that receives is the ratio of the gross power in the power in strong path and all the other each paths or all paths, or the signal that the receives ratio of the significant level absolute value sum in the significant level absolute value in strong path and all the other each paths or all paths;
(b) signal that receives is the power and time ratio of the power in strong path in strong path, or the signal that receives the significant level absolute value and time ratio of the significant level absolute value in strong path in strong path;
(2) according to channel quality parameter, carry out the configuration of physical layer transmission technology, described physical layer transmission technology comprises one or more set of the communication transmission technologies such as modulation system, coded system.
2. a kind of wireless communication system link adaptive transmission method as claimed in claim 1, it is characterized in that, also comprise the step of launching the configuration of form according to channel quality parameter, described emission form comprises one or more combination of diversity, the communication transmission technology such as multiplexing.
3. such as claim 1, one of 2 described a kind of wireless communication system link adaptive transmission methods, it is characterized in that the configuration of described physical layer transmission technology comprises the following steps:
Set one or more average signal-to-noise ratio thresholdings, the channel of wireless communication system is divided into two or more channel statuss, respectively configures physical layer transmission technology set by the size of average signal-to-noise ratio.
4. a kind of wireless communication system link adaptive transmission method as claimed in claim 3 is characterized in that, described respectively configures physical layer transmission technology set also comprises:
Set a signal to noise ratio deviation thresholding, for every kind of channel status, when signal to noise ratio deviation factors during greater than signal to noise ratio deviation thresholding, adopt the modulation system of lower-order number and/or inefficient coded system in the described physical layer transmission technology set.
5. a kind of wireless communication system link adaptive transmission method as claimed in claim 4, it is characterized in that, described a plurality of average signal-to-noise ratio thresholding is two of 15dB and 25dB, described physical layer transmission technology set comprises { 4-QAM, CTC-1/2}, { 16-QAM, CTC-2/3}, { 64-QAM, CTC-3/4}, described signal to noise ratio deviation thresholding is 2dB, and the physical layer transmission technology set is configured to:
(1) when average signal-to-noise ratio during less than 15dB, adopts { 4-QAM, CTC-1/2} transmission technology set;
(2) when average signal-to-noise ratio during more than or equal to 15dB and less than 25dB, if the signal to noise ratio deviation factors is less than or equal to 2dB, then adopt { 16-QAM, CTC-2/3} transmission technology set, if the signal to noise ratio deviation factors is greater than 2dB, then adopt { 4-QAM, CTC-1/2} transmission technology set;
(3) when average signal-to-noise ratio during more than or equal to 25dB, if the signal to noise ratio deviation factors is less than or equal to 2dB, then adopt { 64-QAM, CTC-3/4} transmission technology set, if the signal to noise ratio deviation factors, then adopts { 16-QAM, CTC-2/3} transmission technology set greater than 2dB.
6. as a kind of wireless communication system link adaptive transmission method according to claim 2, it is characterized in that described configuration of launching form according to channel quality parameter comprises the following steps:
(1) sets one or more average multipath relative energy factor thresholdings, and one or more antenna amount thresholdings, according to the population size of the antenna of the average multipath relative energy factor in some threshold ranges of the signal that receives, carry out channel status and divide;
(2) set one or more average signal-to-noise ratio thresholdings, set a plurality of emission forms, according to size and the residing channel status of average signal-to-noise ratio the emission form is set.
7. such as a kind of wireless communication system link adaptive transmission method according to claim 6, it is characterized in that, described mode of carrying out the channel status division is: set the average multipath relative energy factor the first thresholding and the second thresholding, set the first antenna amount thresholding, the second antenna amount thresholding, third antenna quantity thresholding, combined situation according to the average multipath relative energy factor of all reception antennas is divided into one of following kind with channel status:
(a) during more than or equal to the first antenna amount thresholding, be the first channel status more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the first thresholding when receiving the average multipath relative energy factor;
(b) when receiving the average multipath relative energy factor more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the first thresholding during less than the first antenna amount thresholding and more than or equal to the second antenna amount thresholding, perhaps during more than or equal to third antenna quantity thresholding, be the second channel state less than the average multipath relative energy factor the first thresholding and more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the second thresholding when receiving the average multipath relative energy factor;
(c) during less than the second antenna amount thresholding, be the 3rd channel status more than or equal to the number of the antenna of the signal of the average multipath relative energy factor the first thresholding when receiving the average multipath relative energy factor;
Described size and residing channel status mode that the emission form is set according to average signal-to-noise ratio is: set average signal-to-noise ratio the first thresholding and the second thresholding, will launch format configuration according to the size of average signal-to-noise ratio and residing channel status is one of following manner:
(a) for the first channel status, when average signal-to-noise ratio during less than average signal-to-noise ratio the first thresholding, be emission form A; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the first thresholding and less than average signal-to-noise ratio the second thresholding, be emission form A or emission form B; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the second thresholding, be emission form B;
(b) for the second channel state, when average signal-to-noise ratio during less than average signal-to-noise ratio the first thresholding, be emission form A; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the first thresholding and less than average signal-to-noise ratio the second thresholding, be emission form B or emission form C; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the second thresholding, be emission form B or emission form C;
(c) for the 3rd channel status, when average signal-to-noise ratio during less than average signal-to-noise ratio the first thresholding, be emission form A; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the first thresholding and less than average signal-to-noise ratio the second thresholding, be emission form B or emission form C; When average signal-to-noise ratio during more than or equal to average signal-to-noise ratio the second thresholding, be emission form C;
Described emission form A mainly provides diversity, and described emission form C mainly provides multiplexing, and described emission form B takes into account diversity and multiplexing.
8. such as a kind of wireless communication system link adaptive transmission method according to claim 7, it is characterized in that described average signal-to-noise ratio the first thresholding is 15dB, described average signal-to-noise ratio the second thresholding is 25dB.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346996A (en) * | 2013-07-19 | 2013-10-09 | 清华大学 | User cluster MIMO broadcast method based on superposition coding |
| CN103905155A (en) * | 2014-04-10 | 2014-07-02 | 广西师范大学 | Link self-adaptation transmission method based on signal to noise ratio statistical parameters |
| CN105163387A (en) * | 2015-10-15 | 2015-12-16 | 南京新联电子股份有限公司 | 230 MHz wireless private network terminal modulation rate adaptive method |
| CN105229956A (en) * | 2014-04-30 | 2016-01-06 | 华为技术有限公司 | For the adaptive method and apparatus of enhancement mode slow speed link in wireless communication system |
| CN109525303A (en) * | 2018-11-30 | 2019-03-26 | 四川安迪科技实业有限公司 | Adaptive Modulation and Coding control method based on satellite communication |
| CN115348610A (en) * | 2022-10-18 | 2022-11-15 | 成都市以太节点科技有限公司 | Millimeter wave multilink self-adaptive communication method, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567758A (en) * | 2003-06-27 | 2005-01-19 | 上海贝尔阿尔卡特股份有限公司 | Self-adaptive modulating and coding method and device based on channel information second order statistics |
| US20100034309A1 (en) * | 2008-08-11 | 2010-02-11 | Institute For Information Industry | Multiple input multiple output antenna system, signal transmission method, signal transmission apparatus, and computer program product for the multiple input multiple output antenna system |
| CN102694608A (en) * | 2012-05-22 | 2012-09-26 | 广西师范大学 | Method and device for preferable selection of transmission techniques of transceiving equipment of wireless mobile communication system |
-
2013
- 2013-01-17 CN CN201310016903.4A patent/CN103023619B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567758A (en) * | 2003-06-27 | 2005-01-19 | 上海贝尔阿尔卡特股份有限公司 | Self-adaptive modulating and coding method and device based on channel information second order statistics |
| US20100034309A1 (en) * | 2008-08-11 | 2010-02-11 | Institute For Information Industry | Multiple input multiple output antenna system, signal transmission method, signal transmission apparatus, and computer program product for the multiple input multiple output antenna system |
| CN102694608A (en) * | 2012-05-22 | 2012-09-26 | 广西师范大学 | Method and device for preferable selection of transmission techniques of transceiving equipment of wireless mobile communication system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346996A (en) * | 2013-07-19 | 2013-10-09 | 清华大学 | User cluster MIMO broadcast method based on superposition coding |
| CN103905155A (en) * | 2014-04-10 | 2014-07-02 | 广西师范大学 | Link self-adaptation transmission method based on signal to noise ratio statistical parameters |
| CN103905155B (en) * | 2014-04-10 | 2017-04-05 | 广西师范大学 | A kind of link self-adaption transmission method based on signal to noise ratio statistical parameter |
| CN105229956A (en) * | 2014-04-30 | 2016-01-06 | 华为技术有限公司 | For the adaptive method and apparatus of enhancement mode slow speed link in wireless communication system |
| CN105163387A (en) * | 2015-10-15 | 2015-12-16 | 南京新联电子股份有限公司 | 230 MHz wireless private network terminal modulation rate adaptive method |
| CN105163387B (en) * | 2015-10-15 | 2018-09-25 | 南京新联电子股份有限公司 | 230MHz wireless private network end modification speed self-adaption methods |
| CN109525303A (en) * | 2018-11-30 | 2019-03-26 | 四川安迪科技实业有限公司 | Adaptive Modulation and Coding control method based on satellite communication |
| CN109525303B (en) * | 2018-11-30 | 2021-04-02 | 四川安迪科技实业有限公司 | Adaptive modulation coding control method based on satellite communication |
| CN115348610A (en) * | 2022-10-18 | 2022-11-15 | 成都市以太节点科技有限公司 | Millimeter wave multilink self-adaptive communication method, electronic equipment and storage medium |
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| CN103023619B (en) | 2015-07-08 |
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