Chip-Level Channel Equalization in WCDMA Downlink
نویسندگان
چکیده
منابع مشابه
Chip-Level Channel Equalization in WCDMA Downlink
The most important third generation (3G) cellular communications standard is based on wideband CDMA (WCDMA). Receivers based on TDMA style channel equalization at the chip level have been proposed for a WCDMA downlink employing long spreading sequences to ensure adequate performance even with a high number of active users. These receivers equalize the channel prior to despreading, thus restorin...
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Receivers based on channel equalization have proven to be one of the most promising candidates for terminal receivers in wideband code-division multiple-access (WCDMA) downlink. The channel equalizers provide multiple access interference (MAI) suppression, and thus ensure adequate receiver performance even with a high number of active users. However, the suitability of the equalizers to soft ha...
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Receivers based on channel equalization have proven to be one of the most promising candidates for terminal receivers in wideband code-division multiple-access (WCDMA) downlink. The channel equalizers provide multiple access interference (MAI) suppression, and thus ensure adequate receiver performance even with a high number of active users. However, the performance improvement provided by the ...
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In the downlink of WCDMA systems, multi-path propagation destroys the orthogonality of the user signals and causes multi-user interference (MUI). Chip-level equalization can restore the orthogonality and suppress the MUI. However, adaptive implementations of the chip-level equalizer receiver that can track time-varying multi-path channels are hard to realize in practice for two reasons : loss o...
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Cellular WCDMA systems are characterized by multiple access interference (MAI) and multipath interference (MPI). Thus, optimal receivers deploy the signal and channel parameters of all active users for detection of the desired data stream. In this paper receiver concepts for the WCDMA downlink are studied, that reduce interference without knowledge of the multiuser parameters. A promising conce...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2002
ISSN: 1687-6180
DOI: 10.1155/s1110865702000914