Update Rate of Channel Estimation for UMTS-HSDPA in Time-Varying Channels

Andreas Springer; Christoph Mecklenbräuker; Joachim Wehinger; Klemens Freudenthaler

Update Rate of Channel Estimation for UMTS-HSDPA in Time-Varying Channels

Andreas Springer, Christoph Mecklenbräuker, Joachim Wehinger, Klemens Freudenthaler

Institute for Communications Engineering and RF-Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

Abstract

We investigate the update rate for channel estimation in time-varying channels for UMTS-HSDPA. Our channel estimator is based on correlation of the received chip stream and the known pilot stream. This results in an averaging of the estimated channel over a block. First, we investigate the influence of the update rate by averaging over the perfectly known channel at the receiver. This corresponds to the upper bound for block averaging. Second, we examine the throughput by averaging over correlation based channel estimation. We find specific update rates for the ITU-channel models PB3, VA30, and VA120 [1] in combination with RAKE reception or LMMSE equalization for 16-QAM symbol constellation.

Original language	English
Title of host publication	Proc. of 63rd Vehicular Technology Conference VTC 2006
Number of pages	6
Publication status	Published - May 2006

Fields of science

202030 Communication engineering

Simulation and Investigation of the HSDPA System
Freudenthaler, K. (Researcher) & Springer, A. (PI)
01.12.2004 → 31.01.2008
Project: Other › PhD thesis project

Cite this

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title = "Update Rate of Channel Estimation for UMTS-HSDPA in Time-Varying Channels",

abstract = "We investigate the update rate for channel estimation in time-varying channels for UMTS-HSDPA. Our channel estimator is based on correlation of the received chip stream and the known pilot stream. This results in an averaging of the estimated channel over a block. First, we investigate the influence of the update rate by averaging over the perfectly known channel at the receiver. This corresponds to the upper bound for block averaging. Second, we examine the throughput by averaging over correlation based channel estimation. We find specific update rates for the ITU-channel models PB3, VA30, and VA120 [1] in combination with RAKE reception or LMMSE equalization for 16-QAM symbol constellation.",

author = "Andreas Springer and Christoph Mecklenbr{\"a}uker and Joachim Wehinger and Klemens Freudenthaler",

year = "2006",

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T1 - Update Rate of Channel Estimation for UMTS-HSDPA in Time-Varying Channels

AU - Springer, Andreas

AU - Mecklenbräuker, Christoph

AU - Wehinger, Joachim

AU - Freudenthaler, Klemens

PY - 2006/5

Y1 - 2006/5

N2 - We investigate the update rate for channel estimation in time-varying channels for UMTS-HSDPA. Our channel estimator is based on correlation of the received chip stream and the known pilot stream. This results in an averaging of the estimated channel over a block. First, we investigate the influence of the update rate by averaging over the perfectly known channel at the receiver. This corresponds to the upper bound for block averaging. Second, we examine the throughput by averaging over correlation based channel estimation. We find specific update rates for the ITU-channel models PB3, VA30, and VA120 [1] in combination with RAKE reception or LMMSE equalization for 16-QAM symbol constellation.

AB - We investigate the update rate for channel estimation in time-varying channels for UMTS-HSDPA. Our channel estimator is based on correlation of the received chip stream and the known pilot stream. This results in an averaging of the estimated channel over a block. First, we investigate the influence of the update rate by averaging over the perfectly known channel at the receiver. This corresponds to the upper bound for block averaging. Second, we examine the throughput by averaging over correlation based channel estimation. We find specific update rates for the ITU-channel models PB3, VA30, and VA120 [1] in combination with RAKE reception or LMMSE equalization for 16-QAM symbol constellation.

M3 - Conference proceedings

BT - Proc. of 63rd Vehicular Technology Conference VTC 2006

ER -

Update Rate of Channel Estimation for UMTS-HSDPA in Time-Varying Channels

Abstract

Fields of science

Projects

Simulation and Investigation of the HSDPA System

Cite this