Using different channel models for different training sequences

• US 6,853,681 B1
• Filed: 11/28/2000
• Issued: 02/08/2005
• Est. Priority Date: 11/28/2000
• Status: Expired due to Fees

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Lindoff, Bengt
• Primary Examiner(s): Fan, Chieh M.
• Assistant Examiner(s): Kim, Kevin
• Application Number:
  US09/722,749
• Time in Patent Office: 1,533 Days
• Field of Search: 375/229, 375/231, 375/295, 375/324, 375/358, 375/364, 375/365, 375/368
• US Class Current: 375/231
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 25/03006 Arrangements for removing intersymbol interference
• CPC Class Codes: H04L 7/042 Detectors therefor, e.g. correlators, state machines digital correlators in general G06F17/15

Abstract

In a digital telecommunication receiver, one or more of a synchronization technique, a channel model, a channel estimation technique, and/or an equalization technique are selected in order to optimize the training sequence being used and eliminate distortions introduced by the receiver architecture. A combination of synchronization technique (e.g., standard correlation technique; center of gravity synchronization technique), channel model (e.g., standard channel model; channel model including a DC component) and number of channel taps L is selected to optimize the estimation characteristics for the training sequence being used in the telecommunication system.

Claims

1. A method of detecting a data transmission comprising a known training sequence that has been received from a channel, comprising the steps of:

selecting a detection parameter set from a table comprising a plurality of detection parameter sets wherein the selection on is based upon the known training sequence of the data transmission;

configuring a receiver using the selected detection parameter set; and

using the receiver configured with the selected detection parameter set to receive the data transmission;

wherein the detection parameter set comprises a synchronization technique.

2. The method according to claim 1, wherein the synchronization technique is a maximum window value synchronization technique.

3. The method according to claim 1, wherein the synchronization technique is a center of gravity synchronization technique.

4. A method of detecting a data transmission comprising a known training sequence that has been received from a channel, comprising the steps of:

selecting a detection parameter set from a table comprising a plurality of detection parameter sets, wherein the selection is based upon the known training sequence of the data transmission;

configuring a receiver using the selected detection parameter set; and

using the receiver configured with the selected detection parameter set to receive the data transmission;

wherein the detection parameter set comprises a channel model.

5. The method according to claim 4, wherein the channel model is a Standard channel model.

6. The method according to claim 4, wherein the channel model is a channel model including a DC component.

7. A method of detecting a data transmission comprising a known training sequence that has been received from a channel, comprising the steps of:

selecting a detection parameter set from a table comprising a plurality of detection parameter sets, wherein the seen is based upon the known training sequence of the data transmission;

configuring a receiver using the selected detection parameter set; and

using the receiver configured with the selected detection parameter set to receive the data transmission;

wherein the detection parameter set comprises an equalization technique.

8. The method according to claim 7, wherein the equalization technique is DFE equalization.

9. The method according to claim 7, wherein the equalization technique is Viterbi equalization.

10. The method according to claim 7, wherein the equalization technique is DFSE equalization.

11. A method of detecting a data transmission comprising a known training sequence that has been received from a channel, comprising the steps of:

selecting a detection parameter set from a table comprising a plurality of detection parameter sets, wherein the selection is based upon the known training sequence of the data transmission;

configuring a receiver using selected detection parameter set; and

using the receiver configured with the selected detection parameter set to receive the data transmission;

wherein the detection parameter set comprises a channel estimation technique.

12. A receiver configured to receive from a channel a data transmission comprising a known training sequence, the receive comprising:

a synchronization unit;

a channel estimator unit connected to the synchronization unit;

an equalizer unit connected to the channel estimator; and

a control unit that configures the receiver in accordance with a detection parameter set, wherein the control unit selects the detection parameter set based upon the known training sequence being used in the data transmission;

wherein the detection parameter set comprises a synchronization technique, and the synchronization unit is configured in accordance with the synchronization technique.

13. The receiver according to claim 12, wherein the synchronization technique is a maximum window value synchronization technique.

14. The receiver according to claim 12, wherein the synchronization technique is a center of gravity synchronization technique.

15. A receiver configured to receive from a channel a data transmission comprising a known training sequence, the receiver comprising:

a synchronization unit;

a channel estimator unit connected to the synchronization unit;

an equalizer unit connected to the channel estimator; and

a control unit that configures the receiver in accordance with a detection parameter set, wherein the control unit selects the detection parameter set based upon the known training sequence being used in th data transmission;

wherein the detection parameter set comprises a channel model.

16. The receiver according to claim 15, wherein the channel model is a standard channel model.

17. The receiver according to claim 15, wherein the channel model is a channel model including a DC component.

18. A receiver configured to receive from a channel a data transmission comprising a known training sequence, the receiver comprising:

a synchronization unit;

a channel estimator unit connected to the synchronization unit;

an equalizer unit connected to the channel estimator; and

a control unit that configures the receiver in accordance with a detection parameter set, wherein the control unit selects the detection parameter set based upon the known training sequence being used in the data transmission;

wherein the detection parameter set comprises an equalization technique.

19. The receiver according to claim 18, wherein the equalization technique is DFE equalization.

20. The receiver according to claim 18, wherein the equalization technique is Viterbi equalization.

21. The receiver according to claim 18, wherein the equalization technique is DFSE equalization.

22. A receiver configured to receive from a channel a data transmission comprising a known training sequence, the receiver comprising:

a synchronization unit;

a channel estimator unit connected to the synchronization unit;

an equalizer unit connected to the channel estimator; and

a control unit that configures the receiver in accordance with a detection parameter set, wherein the control unit selects the detection parameter set based upon the known training sequence being used in the data transmission;

wherein the detection parameter set comprises a channel estimation technique.