Method of symbol index selection in code division multiple access

A method and device for estimating a target chip index value in a code-division multiple access receiver. The receiver receives signals from a transmitter that uses a plurality of transmitted chips for data transmission through a plurality of multipath channels. As each channel is expressible as a c...

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Main Authors Lilleberg, Jorma, Rounioja, Kim, Sexton, Thomas A
Format Patent
LanguageEnglish
Published 11.09.2007
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Abstract A method and device for estimating a target chip index value in a code-division multiple access receiver. The receiver receives signals from a transmitter that uses a plurality of transmitted chips for data transmission through a plurality of multipath channels. As each channel is expressible as a channel impulse response at a given instant in time, the impulse response can be sampled and the samples indexed by a plurality of delay sample indices. The target chip index value can be determined based on the first moment of the delay sample indices over an impulse response.
AbstractList A method and device for estimating a target chip index value in a code-division multiple access receiver. The receiver receives signals from a transmitter that uses a plurality of transmitted chips for data transmission through a plurality of multipath channels. As each channel is expressible as a channel impulse response at a given instant in time, the impulse response can be sampled and the samples indexed by a plurality of delay sample indices. The target chip index value can be determined based on the first moment of the delay sample indices over an impulse response.
Author Rounioja, Kim
Lilleberg, Jorma
Sexton, Thomas A
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References "Simple MMSE Equalizers for CDMA Downlink to Restore Chip Sequence: Comparison to Zero-Forcing and Rake"; Krauss et al.; ICASSP; 2000; pp. 2865-2868.
"Downlink Channel Decorrelation in CDMA Systems with Long Codes"; Werner et al.; VTC 1999-Fall-50th IEEE International Vehicular Technology Conference, Amsterdam, Netherlands; Sep. 19-22, 1999; pp. 1614-1617.
Collins (4620192) 19861000
"Efficiently Computed Reduced-Parameter Input-Aided MMSE Equalizers for ML Detection: A Unified Approach"; Al-Dhahir et al.; IEEE Transactions on Information Theory, vol. 42, No. 3; May 1996; pp. 903-915.
"Chip-Interleaved Block-Spread Code Division Multiple Access"; Zhou et al.; IEEE Transactions on Information Theory, vol. 50, No. 2; Feb. 200296; pp. 235-248.
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Snippet A method and device for estimating a target chip index value in a code-division multiple access receiver. The receiver receives signals from a transmitter that...
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