CN107204946B - Phase compensation method and device for PUSCH (physical uplink shared channel) - Google Patents

Phase compensation method and device for PUSCH (physical uplink shared channel) Download PDF

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CN107204946B
CN107204946B CN201610159173.7A CN201610159173A CN107204946B CN 107204946 B CN107204946 B CN 107204946B CN 201610159173 A CN201610159173 A CN 201610159173A CN 107204946 B CN107204946 B CN 107204946B
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CN107204946A (en
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吴昊
李军
李�杰
傅强
崔玉萍
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ZTE Corp
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract

The invention discloses a phase compensation method and a phase compensation device for a PUSCH (physical uplink shared channel). The method comprises the following steps: obtaining a channel response phase of each resource block RB; according to the phase difference value between two adjacent RBs, the channel response phase of each resource unit RE is obtained by utilizing phase linear interpolation; and compensating the PUSCH according to the conjugate of the compensation phase of the channel response phase. The invention compensates the PUSCH channel through the phase of the SRS channel, can enable the precision of phase estimation to be more accurate, simultaneously effectively reduces the operation complexity caused by combination calculation, and improves the performance of a receiver.

Description

Phase compensation method and device for PUSCH (physical uplink shared channel)
Technical Field
The present invention relates to the field of network communications, and in particular, to a phase compensation method and apparatus for a Physical Uplink Shared Channel (PUSCH) Channel.
Background
With the development of communication technology, mobile communication is widely used with its unique advantages, and will play an important role in future personal communication. In a mobile communication system, a received signal is inevitably affected by multipath fading and shadowing effects due to the movement of a user. In mobile communication, diversity reception is one of the effective measures often taken to counter the effects of fading.
Mobile radio signals are received over a short distance and the fading of the signals is independent in time, frequency, space, angle and polarization. By utilizing the characteristics, a plurality of signals independent in fading can be obtained by adopting a corresponding method. After obtaining multiple fading independent signals, they need to be combined. The effect of the combining is to add the phase adjusted and delayed branch signals, so that the signal-to-noise ratio is improved.
The improvement in signal-to-noise ratio is related to the weighting factor. There are three basic ways of combining, depending on the choice of weighting factors: and selecting combination, maximum ratio combination and equal gain combination. The maximum ratio combining performance is best in three basic combining methods, the gain combining performance is second, and the combining performance is selected to be the worst. Although the maximum ratio combining performance is the best, when the number of antennas is large, especially for a multiple-input multiple-output (MIMO) system, multiple-transmission and multiple-reception are realized by using multiple antennas, the complexity of the combining operation is very high, so that the working performance of the communication system is greatly reduced.
Disclosure of Invention
The invention provides a phase compensation method and a phase compensation device for a PUSCH (physical uplink shared channel), which are used for solving the problem of higher complexity of combining operation in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in accordance with an aspect of the present invention, there is provided a phase compensation method for a PUSCH channel, including:
acquiring a channel response phase of each resource block RB;
according to the phase difference value between two adjacent RBs, the channel response phase of each resource unit RE is obtained by utilizing phase linear interpolation;
and compensating the PUSCH according to the conjugate of the compensation phase of the channel response phase.
Further, the obtaining the channel response phase of each resource block RB includes:
acquiring channel response of each RB by using a preset channel estimation method according to the received SRS information;
and calculating and acquiring the channel response phase of the RB according to the channel response of each RB.
Further, the formula for obtaining the channel response phase of each resource unit RE by using phase linear interpolation according to the phase difference value between two adjacent RBs is as follows:
Figure BDA0000944237600000021
and the number of the first and second electrodes,
Figure BDA0000944237600000022
and the number of the first and second electrodes,
Figure BDA0000944237600000023
wherein, PmA channel response phase for the mth RE; piChannel response phase for the ith RB; pdResponding to the phase difference value for the ith RB and the (i + 1) th RB; m is the index value of RE and n is the total number of RBs.
Further, the method further comprises:
obtaining the channel response phase of RE in the 1 st RB according to the difference value of the channel response phases of the 2 nd RB and the 1 st RB, wherein the value of m is an integer between [0 and 11 ];
obtaining the channel response phase of RE in the nth RB according to the channel response phase difference value of the nth RB and the (n-1) th RB, wherein the value of m is an integer between [12n-12 and 12n-1], and n is the total number of RBs;
obtaining channel response phases of the first 6 REs in the ith RB according to a channel response phase difference value between the ith RB and the (i-1) th RB, wherein m is an integer between [12+12 (i-2) and 17+12 (i-2) ], obtaining channel response phases of the last 6 REs according to a channel response phase difference value between the ith RB and the (i + 1) th RB, and wherein m is an integer between [18+12 (i-2) and 23+12 (i-2) ]; wherein i is more than or equal to 2.
Further, the formula for compensating the PUSCH channel according to the conjugate of the compensation phase of the channel response phase is as follows:
Figure BDA0000944237600000031
wherein, Y is the PUSCH channel compensation value of the mth RE;
Figure BDA0000944237600000032
the conjugate of the compensated phase for the mth RE; ym is PUSCH data received by the mth RE.
In accordance with another aspect of the present invention, there is provided a phase compensation apparatus for a PUSCH channel, including:
the first acquisition module is used for acquiring the channel response phase of each resource block RB;
a second obtaining module, configured to obtain a channel response phase of each resource unit RE by using phase linear interpolation according to a phase difference between two adjacent RBs;
and the compensation module is used for compensating the PUSCH according to the conjugate of the compensation phase of the channel response phase.
Further, the first obtaining module is specifically configured to:
acquiring channel response of each RB by using a preset channel estimation method according to the received SRS information;
and calculating and acquiring the channel response phase of the RB according to the channel response of each RB.
Further, the formula for the second obtaining module to obtain the channel response phase of each resource unit RE by using phase linear interpolation is as follows:
Figure BDA0000944237600000033
and the number of the first and second electrodes,
Figure BDA0000944237600000034
and the number of the first and second electrodes,
Figure BDA0000944237600000035
wherein, PmA channel response phase for the mth RE; piChannel response phase for the ith RB; pdResponding to the phase difference value for the ith RB and the (i + 1) th RB; m is the index value of RE and n is the total number of RBs.
Further, the method further comprises:
obtaining the channel response phase of RE in the 1 st RB according to the difference value of the channel response phases of the 2 nd RB and the 1 st RB, wherein the value of m is an integer between [0 and 11 ];
obtaining the channel response phase of RE in the nth RB according to the channel response phase difference value of the nth RB and the (n-1) th RB, wherein the value of m is an integer between [12n-12 and 12n-1], and n is the total number of RBs;
obtaining channel response phases of the first 6 REs in the ith RB according to a channel response phase difference value between the ith RB and the (i-1) th RB, wherein m is an integer between [12+12 (i-2) and 17+12 (i-2) ], obtaining channel response phases of the last 6 REs according to a channel response phase difference value between the ith RB and the (i + 1) th RB, and wherein m is an integer between [18+12 (i-2) and 23+12 (i-2) ]; wherein i is more than or equal to 2.
Further, the formula for the compensation unit to compensate the PUSCH channel according to the conjugate of the channel response phase of each RE is as follows:
Figure BDA0000944237600000041
wherein, Y is the PUSCH channel compensation value of the mth RE;
Figure BDA0000944237600000042
the conjugate of the compensated phase for the mth RE; y ismPUSCH data received for the mth RE.
The invention has the following beneficial effects:
the phase compensation method for the PUSCH provided by the invention estimates the channel response phase of RE in each RB according to the channel response phases of two adjacent RBs in the SRS channel, and then compensates the PUSCH according to the obtained channel response phase of each RE. The invention can make the precision of phase estimation more accurate, effectively reduce the operation complexity caused by merging calculation and improve the performance of the receiver.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a phase compensation method for a PUSCH channel in an embodiment of the present invention;
fig. 2 is a block diagram of a phase compensation apparatus for PUSCH channels according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a phase compensation method for a PUSCH channel, including:
step 1, acquiring a channel response phase of each resource block RB;
step 2, according to the channel response phase of the adjacent RB, the channel response phase of each resource unit RE is obtained by utilizing phase linear interpolation;
and 3, compensating the PUSCH according to the conjugate of the compensation phase of the channel response phase.
The phase compensation method for the PUSCH provided by the invention estimates the channel response phase of RE in each RB according to the channel response phases of two adjacent RBs in the SRS channel, and then compensates the PUSCH according to the obtained channel response phase of each RE. The invention can make the precision of phase estimation more accurate, effectively reduce the operation complexity caused by merging calculation and improve the performance of the receiver.
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.
Firstly, step 1 is introduced, and the method for acquiring the signal response phase of each RB specifically includes the following steps:
in the embodiment of the invention, the channel response H of each RB is obtained by utilizing the received SRS signal through a preset least square method LS channel estimation method or a minimum mean square error MMSE channel estimation method. The specific calculation process for obtaining the channel response H by the LS channel estimation method or the MMSE channel estimation method is well known to those skilled in the art, and the detailed description of the present invention is omitted.
Obtaining a response phase P of a channel response H for each RBi。
Specifically, the real part and the imaginary part of the channel response H are respectively taken as absolute values to obtain a channel response H ', and the phase Pi ' of the channel response H ' is obtained. The phase Pi of the channel response H is determined from the phase Pi 'of the channel response H'. Determining the value of the phase Pi from the quadrant in which the channel response H lies, and the phase Pi', comprises the following:
if the value of H falls in the first quadrant, then Pi-Pi';
if the value of H falls in the second quadrant, then Pi-180-Pi';
if the value of H falls in the third quadrant, then Pi-Pi' -180;
if the value of H falls in the fourth quadrant, then Pi-Pi'.
Next, step 2 is introduced, and according to the channel response phases of the adjacent RBs, the channel response phase of each resource element RE is obtained by using phase linear interpolation.
In the embodiment of the invention, when the channel response of the RE is obtained, the channel response phase of each RE in the RB is obtained in a phase linear difference mode according to the difference value of the channel response phases of the adjacent RBs.
Specifically, let the phase of the ith RB be PiThe phase of the (i + 1) th RB is Pi+1Calculating the phase PiAnd Pi+1Difference value P ofd＝Pi+1-Pi。
Judgment of PdAnd 180, and obtaining P according to the judgment resultnThe formula is as follows: a
Figure BDA0000944237600000061
Wherein, PdThe channel response phase difference value of the ith RB and the (i + 1) th RB is obtained.
And calculating the channel response phase of each RE according to a phase linear interpolation formula, wherein the specific formula is as follows:
Figure BDA0000944237600000062
wherein, PmA channel response phase for the mth RE; pi is the channel response phase of the ith RB; m is the index of RE and has a value range of [0,12 n-1%]An integer of (d), n is the total number of RBs; j is obtained by the following formula:
Figure BDA0000944237600000063
specifically, the channel response phase of the RE in the 1 st RB is obtained according to the channel response phase difference between the 2 nd RB and the 1 st RB, and the value of m is an integer between [0,11 ]; obtaining the channel response phase of RE in the nth RB according to the channel response phase difference value of the nth RB and the (n-1) th RB, wherein the value of m is an integer between [12n-11 and 12n-1], and n is the total number of RBs; obtaining channel response phases of the first 6 REs in the ith RB according to a channel response phase difference value between the ith RB and the (i-1) th RB, wherein m is an integer between [12+12 (i-2) and 17+12 (i-2) ], obtaining channel response phases of the last 6 REs according to a channel response phase difference value between the ith RB and the (i + 1) th RB, and wherein m is an integer between [18+12 (i-2) and 23+12 (i-2) ]; wherein i is more than or equal to 2.
Next, referring to step 3, the PUSCH channel is compensated based on the conjugate of the compensation phase of the RE channel response phase.
Compensating the PUSCH channel by the conjugate of the compensation phase of the channel response phase of each RE, and calculating the formula as follows:
Figure BDA0000944237600000071
wherein, Y is the PUSCH channel compensation value of the mth RE;
Figure BDA0000944237600000072
the conjugate of the compensated phase for the mth RE; y ismPUSCH data received for the mth RE.
The present invention will be described in further detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
Assuming that the number of RBs occupied by PUSCH is 4, the specific embodiment is as follows:
first, a channel response phase of each RB is acquired according to the received SRS. The channel response H of each RB is obtained using LS channel estimation or MMSE channel estimation using the received SRS signal [ 01 +1i i 1-i ]. The real part and the imaginary part of H are respectively taken as absolute values to obtain H ' ═ 01 +1i i, and the phase Pi ' ═ 04590135 of H ' is obtained. From the quadrant in which H falls, Pi ═ 04590135 is obtained.
Second, the channel response phase of each RE is obtained by phase linear interpolation.
The phase of the 1 st RB is P1-0, and the phase of the 2 nd RB is P2-45. The difference Pd-P2-P1-45 between P1 and P2 was calculated. Since Pd is greater than-180 and less than 180, P ═ Pd ═ 45. According to the phase linear interpolation formula (2),
Figure BDA0000944237600000081
j is 0, the channel response phase of the RE in the 1 st RB, and m is an integer between the intervals [0,11], rounded off according to the above formula to obtain [ -19-15-11-7-404811151923 ].
j is 0, and m is an integer between the intervals [12, 17] of the first 6 REs in the 2 nd RB, and rounded off according to the above formula to obtain the channel response phase [ 263034384145 ] of the RE.
The phase of the 2 nd RB is P2-45, and the phase of the 3 rd RB is P3-90. The difference Pd-P3-P2-45 between P3 and P2 was calculated. Because Pd is greater than-180 and less than 180, Pn ═ Pd ═ 45. Pn and i are substituted into the formula (2),
Figure BDA0000944237600000082
j is an integer of 1, the channel response phase of the last 6 REs in the 2 nd RB, and m is between the intervals [18, 23], and rounded off according to the above formula to obtain the channel response phase [ 495356606468 ] of the RE.
j is an integer of 1, the channel response phase of the first 6 REs in the 3 rd RB, m is between the intervals [24, 29], and the channel response phase of the RE [ 717579838690 ] can be obtained by rounding off according to the above formula
The phase of the 3 rd RB is P3-90, and the phase of the 4 th RB is P4-135. The difference Pd-P4-P3-45 between P2 and P3 was calculated. Because Pd is greater than-180 and less than 180, Pn ═ Pd ═ 45. Pn and i are substituted into the formula (2),
Figure BDA0000944237600000083
j is an integer of 2, the first 6 REs in the 3 rd RB, and m is between the intervals [30, 35], rounded off according to the above formula to obtain the channel response phase [ 9498101105109113 ] of the RE.
j is the channel response phase of the RE in 2, 4 th RB, m is an integer between the intervals [35, 41], and rounded off according to the above formula to obtain the channel response phase of the RE [ 116121124128131135139143146150154158 ].
The channel response of the RE indices 0 to 35 is [ -19-15-11-7-4048111519232630343841454953566064687175798386909498101105109113116121124128131135139143146150154158 ].
Finally, the PUSCH channel is compensated according to the conjugate of the channel response phase of each RE. Calculating the conjugate of the response phase according to the obtained channel response phase of each RE, substituting the conjugate value into a formula (4) to obtain the conjugate value, compensating the PUSCH channel by each RE, and then combining all the compensation values to obtain the received PUSCH data.
Example 2
Assuming that the number of RBs occupied by PUSCH is 3, the specific embodiment is as follows:
first, a channel response phase of each RB is acquired according to the received SRS. The channel response H of each RB is obtained using LS channel estimation or MMSE channel estimation using the received SRS signal [ 01 +1i i ]. The real part and the imaginary part of H are respectively taken as absolute values to obtain H ' ═ 01 +1i i, and the phase Pi ' ═ 04590 of H ' is obtained. From the quadrant in which H falls, Pi ═ 04590 is obtained.
Second, the channel response phase of each RE is obtained by phase linear interpolation.
The phase of the 1 st RB is P1-0, and the phase of the 2 nd RB is P2-45. The difference Pd-P2-P1-45 between P1 and P2 was calculated. Since Pd is greater than-180 and less than 180, P ═ Pd ═ 45. According to the phase linear interpolation formula (2),
Figure BDA0000944237600000091
j is 0, the channel response phase of the RE in the 1 st RB, m is an integer between the intervals [0,11], and the channel response phase of the RE [ -19-15-11-7-404811151923 ] is rounded according to the above formula.
j is 0, and m is an integer between the intervals [12, 17] of the first 6 REs in the 2 nd RB, and the channel response phase of the RE is rounded according to the above formula [ 263034384145 ].
The phase of the 2 nd RB is P2-45, and the phase of the 3 rd RB is P3-90. The difference Pd-P3-P2-45 between P3 and P2 was calculated. Because Pd is greater than-180 and less than 180, Pn ═ Pd ═ 45. Pn and i are substituted into the formula (2),
Figure BDA0000944237600000092
j is the channel response phase of the last 6 REs in 1 and 2 nd RB, m is an integer between the intervals [18, 23], and the channel response phase of the RE is rounded off according to the formula [ 495356606468 ]
j is the channel response phase of the first 6 REs in 1, 3 rd RB, m is an integer between the intervals [24, 35], and the channel response phase of the RE is rounded according to the above formula [ 7175798386909498101105109113 ].
The channel response of the RE indices 0 to 35 is [ -19-15-11-7-4048111519232630343841454953566064687175798386909498101105109113 ].
Finally, the PUSCH channel is compensated according to the conjugate of the channel response phase of each RE. Calculating the conjugate of the response phase according to the obtained channel response phase of each RE, substituting the conjugate value into a formula (4) to obtain the conjugate value, compensating the PUSCH channel by each RE, and then combining all the compensation values to obtain the received PUSCH data.
Example 3
Assuming that the number of RBs occupied by PUSCH is 2, embodiment 1 is as follows:
first, a channel response phase of each RB is acquired according to the received SRS. A channel response H of each RB is acquired using LS channel estimation or MMSE channel estimation using the received SRS signal [1+1 i-1 +1i ].
Taking absolute values of the real part and the imaginary part of H to obtain H ═ 1+1i]Finding the phase P of Hi’＝[45 45]. From the quadrant in which H falls, P is obtainedi’＝[45 135]。
Second, the channel response phase of each RE is obtained by phase linear interpolation. From step 1, the phase of the 1 st RB is P1-45, and the phase of the 2 nd RB is P2-135. The difference between P0 and P1, Pd-P2-P1-90, Pn-90, is calculated because-180 < Pd < 180.
According to the phase linear interpolation formula (2),
Figure BDA0000944237600000101
m is an integer between the values of [0, 23], and the phase of the channel response of each RE of the 1 st RB and the 2 nd RB is calculated according to the above formula and rounded to [ 8152330384553606875839098105113120128135143150158165173180 ].
Finally, the PUSCH channel is compensated according to the conjugate of the channel response phase of each RE. Calculating the conjugate of the response phase according to the channel response phase of each RE acquired in step 102, and substituting the conjugate value into formula (4) to obtain the compensation value for the PUSCH channel by each RE, and then combining all the compensation values to obtain the received PUSCH channel data.
As shown in fig. 2, the present invention also provides a phase compensation apparatus for PUSCH channel, including:
the first acquisition module is used for acquiring the channel response phase of each resource block RB;
a second obtaining module, configured to obtain a channel response phase of each resource unit RE by using phase linear interpolation according to a phase difference between two adjacent RBs;
and the compensation module is used for compensating the PUSCH according to the conjugate of the compensation phase of the channel response phase.
Further, the first obtaining module is specifically configured to:
acquiring channel response of each RB by using a preset channel estimation method according to the received SRS information;
and calculating and acquiring the channel response phase of the RB according to the channel response of each RB.
Further, the formula for the second obtaining module to obtain the channel response phase of each resource unit RE by using phase linear interpolation is as follows:
Figure BDA0000944237600000111
and is，
Figure BDA0000944237600000112
And is
Figure BDA0000944237600000113
Wherein, PmA channel response phase for the mth RE; piChannel response phase for the ith RB; pdResponding to the phase difference value for the ith RB and the (i + 1) th RB; m is the index value of RE and n is the total number of RBs.
Further, the second obtaining module is specifically configured to:
obtaining the channel response phase of RE in the 1 st RB according to the difference value of the channel response phases of the 2 nd RB and the 1 st RB, wherein the value of m is an integer between [0 and 11 ];
obtaining the channel response phase of RE in the nth RB according to the channel response phase difference value of the nth RB and the (n-1) th RB, wherein the value of m is an integer between [12n-12 and 12n-1], and n is the total number of RBs;
obtaining channel response phases of the first 6 REs in the ith RB according to a channel response phase difference value between the ith RB and the (i-1) th RB, wherein m is an integer between [12+12 (i-2) and 17+12 (i-2) ], obtaining channel response phases of the last 6 REs according to a channel response phase difference value between the ith RB and the (i + 1) th RB, and wherein m is an integer between [18+12 (i-2) and 23+12 (i-2) ]; wherein i is more than or equal to 2.
Further, the formula for the compensation unit to compensate the PUSCH channel according to the conjugate of the channel response phase of each RE is as follows:
Figure BDA0000944237600000121
wherein, Y is the PUSCH channel compensation value of the mth RE;
Figure BDA0000944237600000122
the conjugate of the compensated phase for the mth RE; y ismPUSCH data received for the mth RE.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A phase compensation method for a physical uplink shared physical uplink channel (PUSCH) is characterized by comprising the following steps:
acquiring a channel response phase of each resource block RB;
according to the phase difference value between two adjacent RBs, the channel response phase of each resource unit RE is obtained by utilizing phase linear interpolation;
and compensating the PUSCH according to the conjugate of the compensation phase of the channel response phase of each resource element RE.
2. The phase compensation method of claim 1, wherein the obtaining the channel response phase of each Resource Block (RB) comprises:
acquiring channel response of each RB by using a preset channel estimation method according to the received SRS information;
and calculating and acquiring the channel response phase of the RB according to the channel response of each RB.
3. The phase compensation method of claim 1, wherein the formula for obtaining the channel response phase of each resource unit RE by using phase linear interpolation according to the phase difference value between two adjacent RBs is as follows:
Figure FDA0002902626310000011
and the number of the first and second electrodes,
Figure FDA0002902626310000012
and the number of the first and second electrodes,
Figure FDA0002902626310000013
wherein, PmA channel response phase for the mth RE; piChannel response phase for the ith RB; pdResponding to the phase difference value for the ith RB and the (i + 1) th RB; m is the index value of RE and n is the total number of RBs.
4. The phase compensation method of claim 3, further comprising:
obtaining the channel response phase of RE in the 1 st RB according to the difference value of the channel response phases of the 2 nd RB and the 1 st RB, wherein the value of m is an integer between [0 and 11 ];
obtaining the channel response phase of RE in the nth RB according to the channel response phase difference value of the nth RB and the (n-1) th RB, wherein the value of m is an integer between [12n-12 and 12n-1], and n is the total number of RBs;
obtaining channel response phases of the first 6 REs in the ith RB according to a channel response phase difference value between the ith RB and the (i-1) th RB, wherein m is an integer between [12+12 (i-2) and 17+12 (i-2) ], obtaining channel response phases of the last 6 REs according to a channel response phase difference value between the ith RB and the (i + 1) th RB, and wherein m is an integer between [18+12 (i-2) and 23+12 (i-2) ]; wherein i is more than or equal to 2.
5. The phase compensation method of claim 1, wherein the formula for compensating the PUSCH channel according to the conjugate of the compensation phase of the channel response phase of each resource element RE is as follows:
Figure FDA0002902626310000021
wherein, Y is the PUSCH channel compensation value of the mth RE;
Figure FDA0002902626310000022
the conjugate of the compensated phase for the mth RE; y ismPUSCH data received for the mth RE.
6. A phase compensation apparatus for a PUSCH channel, comprising:
the first acquisition module is used for acquiring the channel response phase of each resource block RB;
a second obtaining module, configured to obtain a channel response phase of each resource unit RE by using phase linear interpolation according to a phase difference between two adjacent RBs;
and a compensation module, configured to compensate the PUSCH channel according to a conjugate of a compensation phase of the channel response phase of each resource element RE.
7. The phase compensation apparatus of claim 6, wherein the first obtaining module is specifically configured to:
acquiring channel response of each RB by using a preset channel estimation method according to the received SRS information;
and calculating and acquiring the channel response phase of the RB according to the channel response of each RB.
8. The phase compensation apparatus of claim 6, wherein the second obtaining module obtains the channel response phase of each resource unit RE by phase linear interpolation according to the following formula:
Figure FDA0002902626310000031
and the number of the first and second electrodes,
Figure FDA0002902626310000032
and is
Figure FDA0002902626310000033
Wherein, PmA channel response phase for the mth RE; piChannel response phase for the ith RB; pdResponding to the phase difference value for the ith RB and the (i + 1) th RB; m is the index value of RE and n is the total number of RBs.
9. The phase compensation apparatus of claim 8, wherein the second obtaining module is specifically configured to:
obtaining the channel response phase of RE in the 1 st RB according to the difference value of the channel response phases of the 2 nd RB and the 1 st RB, wherein the value of m is an integer between [0 and 11 ];
obtaining the channel response phase of RE in the nth RB according to the channel response phase difference value of the nth RB and the (n-1) th RB, wherein the value of m is an integer between [12n-12 and 12n-1], and n is the total number of RBs;
obtaining channel response phases of the first 6 REs in the ith RB according to a channel response phase difference value between the ith RB and the (i-1) th RB, wherein m is an integer between [12+12 (i-2) and 17+12 (i-2) ], obtaining channel response phases of the last 6 REs according to a channel response phase difference value between the ith RB and the (i + 1) th RB, and wherein m is an integer between [18+12 (i-2) and 23+12 (i-2) ]; wherein i is more than or equal to 2.
10. The phase compensation apparatus of claim 6, wherein the compensation module compensates the PUSCH channel according to the conjugate of the channel response phase of each RE by the following formula:
Figure FDA0002902626310000034
wherein, Y is the PUSCH channel compensation value of the mth RE;
Figure FDA0002902626310000035
the conjugate of the compensated phase for the mth RE; y ismReceived for the m-th REAnd PUSCH data.
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