Method, apparatus and system for sending physical layer signal

• US 9,794,099 B2
• Filed: 09/06/2016
• Issued: 10/17/2017
• Est. Priority Date: 06/07/2012
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.), Tsinghua University
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.), Tsinghua University
• Inventors: Xiao, Zhenyu, Zhang, Changming, Liu, Pei
• Primary Examiner(s): CATTUNGAL, AJAY P
• Application Number:
  US15/257,643
• Publication Number:
  US 20160373282A1
• Time in Patent Office: 406 Days
• CPC Class Codes: H04L 1/0086 Unequal error protection H04L27/00 and H04L1/004 take precedence for layer 1/2 aspects, e.g. bit loading
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/3863 Compensation for quadrature error in the received signal
• CPC Class Codes: H04L 43/04 Processing captured monitoring data, e.g. for logfile generation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

Embodiments of the present invention disclose a sending apparatus and a receiving apparatus, and a method for sending a physical layer signal, includes: constructing a signal with a frame structure comprising multiple Ga₁₂₈ sequences, a —Ga₁₂₈ sequence, and a single-frequency sequence of M in length; wherein the Ga₁₂₈ and —Ga₁₂₈ sequences are Golay sequences of 128 in length, M is an integer multiple of 128, and the single-frequency sequence comprises M single-frequency symbols and is used to enable a receiving apparatus to estimate an Inphase and Quadrature (IQ) imbalance parameter; and sending the signal with the frame structure.

Claims

1. A method for sending a signal, comprising:

constructing, by a sending apparatus, the signal with a frame structure comprising multiple Ga₁₂₈ sequences, a —

Ga₁₂₈ sequence, and a single-frequency sequence of M in length;

wherein the Ga₁₂₈ and —

Ga₁₂₈ sequences are Golay sequences of 128 in length, M is an integer multiple of 128, and the single-frequency sequence comprises M single-frequency symbols and is used to enable a receiving apparatus to estimate an Inphase and Quadrature (IQ) imbalance parameter; and

sending, by the sending apparatus, the signal with the frame structure.

2. The method according to claim 1, wherein phases of the M single-frequency preset symbols is increased sequentially by π

/2.

3. The method according to claim 2, wherein the single-frequency sequence is e^jnπ

/2, n=1,2,L,M.

4. The method according to claim 1, wherein the frame structure of the signal comprises a data block, and the single-frequency sequence is located before the data block in the frame structure of the signal.

5. The method according to claim 1, wherein the frame structure of the signal comprises a training data block, and the training data block is used to enable the receiving apparatus to estimate a distorted constellation.

6. The method according to claim 5, wherein constellation points obtained through a modulation of the training data block are distributed with equal probability.

7. The method according to claim 5, wherein the training data block is located before a data block in the frame structure of the signal, and the single-frequency sequence is located before the training data block in the frame structure of the signal.

8. A sending apparatus, comprising:

a processor, configured to construct a signal with a frame structure comprising multiple Ga₁₂₈ sequences, a —

Ga₁₂₈ sequence, and a single-frequency sequence of M in length;

wherein the Ga₁₂₈ and —

Ga₁₂₈ sequences are Golay sequences of 128 in length, M is an integer multiple of 128, and the single-frequency sequence comprises M single-frequency symbols and is used to enable a receiving apparatus to estimate an Inphase and Quadrature (IQ) imbalance parameter; and

a transmitter, configured to send the signal with the frame structure to the receiving apparatus.

9. The sending apparatus according to claim 8, wherein phases of the M single-frequency preset symbols is increased sequentially by π

/2.

10. The sending apparatus according to claim 9, wherein the single-frequency sequence is e^jnπ

/2, n=1,2,L,M.

11. The sending apparatus according to claim 8, wherein the frame structure of the signal comprises a data block, and the single-frequency sequence is located before the data block in the frame structure of the signal.

12. The sending apparatus according to claim 8, wherein the frame structure of the signal comprises a training data block, and the training data block is used to enable the receiving apparatus to estimate a distorted constellation.

13. The sending apparatus according to claim 12, wherein constellation points obtained through a modulation of the training data block are distributed with equal probability.

14. The sending apparatus according to claim 12, wherein the training data block is located before a data block in the frame structure of the signal, and the single-frequency sequence is located before the training data block in the frame structure of the signal.

15. A receiving apparatus, comprising:

a receiver, configured to receive a signal with a frame structure comprising multiple Ga₁₂₈ sequences, a —

Ga₁₂₈ sequence, and a single-frequency sequence of M in length;

wherein the Ga₁₂₈ and —

Ga₁₂₈ sequences are Golay sequences of 128 in length, M is an integer multiple of 128, and the single-frequency sequence comprises M single-frequency symbols and is used to enable the receiving apparatus to estimate an Inphase and Quadrature (IQ) imbalance parameter; and

a processor, configured to estimate the IQ imbalance parameter according to the single-frequency sequence.

16. The receiving apparatus according to claim 15, wherein phases of the M single-frequency preset symbols is increased sequentially by π

/2.

17. The receiving apparatus according to claim 16, wherein the single-frequency sequence is e^jnπ

/2, n=1,2,L,M.

18. The receiving apparatus according to claim 15, wherein the frame structure of the signal comprises a data block, and the single-frequency sequence is located before the data block in the frame structure of the signal.

19. The receiving apparatus according to claim 15, wherein the frame structure of the signal comprises a training data block, and the processor is configured to estimate a distorted constellation according to the training data block.

20. The receiving apparatus according to claim 19, wherein constellation points obtained through a modulation of the training data block are distributed with equal probability.