Method for equalization of a data signal taking into account a disturbance channel
AssigneeInfineon Technologies AG
InventorBurkhard Becker
Life of this patent
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Abstract
A useful channel trellis diagram is processed in a method for equalization of a signal which is transmitted via a useful channel. A disturbance channel trellis diagram is then processed, with useful channel path information being used as a DF contribution. The useful channel trellis diagram is processed once again, using disturbance channel path information as the DF contribution. When the useful channel trellis diagram is being processed for the first time, access is made to input information which was obtained during the useful channel trellis diagram processing in the previous time unit.
Claims19
A method for equalization of a signal which is transmitted via a useful channel using a decision feedback (DF) method and taking into consideration at least one disturbance channel, per unit time comprising:
- (a) processing, by a processor, a trellis diagram of the useful channel;
- (b) processing, by the processor, a trellis diagram of the disturbance channel, with a DF contribution which is used in the processing of the trellis diagram of the disturbance channel containing information, determined in step (a), of the useful channel;
- (c) processing, by the processor, the trellis diagram of the useful channel being once again, with a DF contribution, which was used when the trellis diagram of the useful channel was processed once again, containing information, determined in step (b), of the disturbance channel;
- and
- wherein input information being accessed in step (a) during the processing of the trellis diagram of the useful channel, which input information was determined when the trellis diagram of the useful channel was processed once again in step (c) in a previous time unit.
A method for equalization of a signal which is transmitted via a useful channel using a decision feedback (DF) method and taking into consideration at least one disturbance channel, per time unit comprising:
- (a) processing, by a processor, a trellis diagram of the disturbance channel being for a time unit under consideration;
- (b) processing, by the processor, a trellis diagram of the useful channel for the time unit delayed by a first predetermined time delay with respect to the time unit under consideration, with a DF contribution which was used during the processing of the trellis diagram of the useful channel including path information of the disturbance channel which was determined in step (a) and occurred at a time equivalent to at least the first predetermined time delay before the time unit under consideration.
A system for equalization of a signal which is transmitted via a useful channel using a decision feedback (DF) method and taking into consideration at least one disturbance channel, comprising:
- a processor configured to:
- process a trellis diagram of the useful channel per time unit;
- process a trellis diagram of the disturbance channel per time unit, with a DF contribution which is used in the processing of the trellis diagram of the disturbance channel containing information, determined in step (a), of the useful channel;
- process the trellis diagram of the useful channel being once again per time unit, with a DF contribution which was used when the trellis diagram of the useful channel was processed once again, containing information, determined by the means for processing a trellis diagram of the disturbance channel;
- and
- access input information during the processing of the trellis diagram of the useful channel, which input information was determined when the trellis diagram of the useful channel was processed once again in a previous time unit.
Dependencies are inferred from the claim text.