Transmission/reception apparatus and method for supporting MIMO technology in a forward link of a high rate packet data system

• US 8,774,137 B2
• Filed: 11/26/2012
• Issued: 07/08/2014
• Est. Priority Date: 01/25/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Yu, Jae-Chon, Kwon, Hwan-Joon, Kim, Dong-Hee, Kim, Yu-Chul, Han, Jin-Kyu
• Primary Examiner(s): Bhattacharya, Sam
• Application Number:
  US13/685,333
• Publication Number:
  US 20130077711A1
• Time in Patent Office: 589 Days
• Field of Search: 370/208, 370/252, 370/328, 370/330, 370/334, 370/335
• US Class Current: 370/335
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04L 2025/03414 Multicarrier
• CPC Class Codes: H04L 2025/03426 transmission using multiple-input and multiple-output channels
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/0228 with direct estimation from sounding signals
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 27/0012 arrangements for identifying the type of modulation
• CPC Class Codes: H04L 27/2626 Arrangements specific to the transmitter only
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0026 Division using four or more dimensions
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

Methods and apparatus are provided for transmitting and receiving data in a communication system with a plurality of antennas. Data and a first pilot are generated. The first pilot is transmitted at a first position in a frequency domain that corresponds to a position of the generated data in the frequency domain and at a first position in a time domain that is with the generated data, in every transmission time interval of the data. A second pilot is generated. The second pilot is transmitted at predetermined second positions in the time domain and the frequency domain, in a transmission time interval that is predefined by a transmitter and a receiver.

Claims

1. A method for transmitting data in a communication system with a plurality of antennas, the method comprising the steps of:

generating data and a first type pilot;

transmitting the first type pilot at a first position in a frequency domain that corresponds to a position of the generated data in the frequency domain and at a first position in a time domain that is in a transmission time interval of the data;

generating a second type pilot; and

transmitting the second type pilot at a predetermined second position in the time domain and a predetermined second position the frequency domain, in the transmission time interval that is predefined by a transmitter and a receiver,

wherein the transmission time interval comprises two parts, each of the two parts including the first type pilot on a center thereof.

2. The method of claim 1, wherein the predetermined second position in the time domain is located on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol or a last OFDM symbol in the transmission time interval.

3. The method of claim 1, wherein each of the two parts further includes control information being located on at least one side of the first type pilot.

4. The method of claim 1, wherein the predetermined second position in the frequency domain is mapped in a scattered manner.

5. The method of claim 1, wherein the predetermined second position in the time domain and the first position in the time domain are Time Division Multiplexed (TDMed).

6. The method of claim 1, wherein the first type pilot is used for demodulation of the data.

7. The method of claim 1, wherein the second type pilot is used for measurement of channel quality.

8. A transmitter for transmitting data in a communication system with a plurality of antennas, the transmitter comprising:

a pilot signal generator for generating a first type pilot and a second type pilot;

a transmission unit for transmitting data, the first type pilot, and the second type pilot over a wireless network; and

a controller for controlling the transmission unit to transmit the first type pilot at a first position in a frequency domain that corresponds to a position of the generated data in the frequency domain and at a first position in a time domain that is in a transmission time interval of the data and to transmit the second type pilot at a predetermined second position in the time domain and a predetermined second position in the frequency domain, in the transmission time interval that is predefined by the transmitter and a receiver,

wherein the transmission time interval comprises two parts, each of the two parts including the first type pilot on a center thereof.

9. The transmitter of claim 8, wherein the predetermined second position in the time domain is located on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol or a last OFDM symbol in the transmission time interval.

10. The transmitter of claim 8, wherein each of the two parts further includes control information being located on at least one side of the first type pilot.

11. The transmitter of claim 8, wherein the predetermined second position in the frequency domain is mapped in a scattered manner.

12. The transmitter of claim 8, wherein the predetermined second position in the time domain and the first position in the time domain are Time Division Multiplexed (TDMed).

13. The transmitter of claim 8, wherein the first type pilot is used for demodulation of the data.

14. The transmitter of claim 8, wherein the second type pilot is used for measurement of channel quality.

15. A method for receiving data in a communication system with a plurality of antennas, the method comprising the steps of:

identifying a first position in a frequency domain corresponding to a position for data in the frequency domain and a first position in a time domain that is in a transmission time interval of the data, for a first type pilot;

receiving the data and the first type pilot at the identified first positions in the frequency domain and the time domain in the transmission time interval of the data;

identifying a second position in the time domain and a second position in the frequency domain in the transmission time interval that is predefined by a transmitter and a receiver, for a second type pilot; and

receiving the second type pilot at the identified second position in the time domain and the identified second position in the frequency domain in the transmission time interval,

wherein the transmission time interval comprises two parts, each of the two parts including the first type pilot on a center thereof.

16. The method of claim 15, wherein the second position in the time domain is located on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol or a last OFDM symbol in the transmission time interval.

17. The method of claim 15, wherein each of the two parts further includes control information being located on at least one side of the first type pilot.

18. A receiver for receiving data in a communication system with a plurality of antennas, the receiver comprising:

a reception unit configured to receive data, a first type pilot, and a second type pilot;

a controller configured to identify a first position in a frequency domain corresponding to a position for data in the frequency domain and a first position in a time domain that is in a transmission time interval of the data, for a first type pilot, to control the reception unit to receive the data and the first type pilot at the identified first positions in the frequency domain and the time domain in the transmission time interval of the data, to identify a second position in the time domain and a second position in the frequency domain in the transmission time interval that is predefined by a transmitter and the receiver, for a second type pilot, and to control the reception unit to receive the second type pilot at the identified second position in the time domain and the identified second position in the frequency domain in the transmission time interval,

wherein the transmission time interval comprises two parts, each of the two parts including the first type pilot on a center thereof.

19. The receiver of claim 18, wherein the second position in the time domain is located on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol or a last OFDM symbol in the transmission time interval.

20. The receiver of claim 18, wherein each of the two parts further includes control information being located on at least one side of the first type pilot.