Reception method and receiver for mobile radiotelephone applications
AssigneeInfineon Technologies AG
InventorsMarkus Doetsch, Peter Jung, J{overscore (o)}rg Plechinger, Peter Schmidt
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Abstract
In a receiving method for mobile radio applications, a given user data signal and at least one further user data signal located within the same frequency band are received. These two user data signals are equalized with an adaptive multiuser data detector and with a multiuser channel decoder that is connected in the feeback path to the adaptive muliuser data detector. Noise-reduction in the given user data signal is achieved by taking into consideration, during channel decoding, an extrinsic information item generated during source decoding.
Claims9
A receiving method for mobile radio applications, which comprises the following steps:
- receiving a given user data signal and at least one further user data signal within a same frequency band;
- iteratively equalizing the given user data signal and the further user data signal within an iterative equalizer comprising an adaptive multiuser data detector and a multiuser channel decoder connected via a feedback path to the adaptive multiuser data detector;
- during the iterative equalization process, further source decoding a signal output from the iterative equalizer and generating an extrinsic information item;
- and
- feeding back the extrinsic information item to the multiuser channel decoder and utilizing the extrinsic information item for multiuser channel decoding within the iterative equalization process, thereby effecting a noise reduction in the iteratively equalized given user data signal.
A receiving device for mobile radio communications, comprising:
- a radio-frequency stage for receiving a given user data signal and at least one further user data signal located within a same frequency band;
- and
- an iterative equalizer connected to said radio-frequency stage and adapted to equalize the given user data signal and the further user data signal, said iterative equalizer including an adaptive multiuser data detector and a multiuser channel decoder connected in a feedback path to said adaptive multiuser data detector, and said iterative equalizer being configured to utilize in a channel decoding operation an extrinsic information item generated during source decoding received through a feedback from said multiuser channel decoder.
Dependencies are inferred from the claim text.