Corpus ID: 5677686

Freescale Semiconductor Application Note AN 3059 Rev . 0 , 1 / 2006 Channel Estimation in OFDM Systems

@inproceedings{Shen2005FreescaleSA,
  title={Freescale Semiconductor Application Note AN 3059 Rev . 0 , 1 / 2006 Channel Estimation in OFDM Systems},
  author={Yushi Shen and Ester Calder{\'o}n Mart{\'i}nez},
  year={2005}
}
1 OFDM Background .....................................................2 2 Baseband Model ..........................................................2 3 Block-Type Pilot Channel Estimation .........................4 4 Comb-Type Pilot Channel Estimation.........................7 5 Other Pilot-Aided Channel Estimations ......................9 6 Performance Evaluation.............................................10 7 Conclusions................................................................14 8… Expand
Channel Estimation for Advanced 5G/6G Use Cases on a Vector Digital Signal Processor
TLDR
A software implementation is proposed that can dynamically switch between latency and throughput efficient algorithms and thereby avoid both unnecessary HW overprovisioning and excess power consumption and is demonstrated with an example implementation of CE for the high-end. Expand

References

SHOWING 1-10 OF 12 REFERENCES
On two-dimensional adaptive channel estimation in OFDM systems
In orthogonal frequency division multiplexing (OFDM) systems, two-dimensional (both time and frequency) minimum mean square error (2D-MMSE) channel estimation is optimum. However, accurate channelExpand
Simplified channel estimation for OFDM systems with multiple transmit antennas
TLDR
Two techniques to improve the performance and reduce the complexity of channel parameter estimation are presented: optimum training-sequence design and simplified channel estimation. Expand
A comparative study of robust channel estimators for OFDM systems
  • Wuxian. Jiang, Wu Weiling
  • Computer Science
  • International Conference on Communication Technology Proceedings, 2003. ICCT 2003.
  • 2003
TLDR
It is shown that the low-pass interpolation-based estimation gives the lowest complexity among the three estimators, but its performance is not so good as the other two. Expand
A comparative study of iterative channel estimators for mobile OFDM systems
TLDR
This work investigates two iterative channel estimators for mobile orthogonal-frequency division multiplexing and finds that the superior iterative estimator is superior and its performance is independent of whether the chosen time-frequency pilot grid satisfies the two-dimensional sampling theorem or not. Expand
Channel estimation techniques based on pilot arrangement in OFDM systems
TLDR
This work has implemented a decision feedback equalizer for all sub-channels followed by periodic block-type pilots and compared the performances of all schemes by measuring bit error rates with 16QAM, QPSK, DQPSK and BPSK as modulation schemes, and multipath Rayleigh fading and AR based fading channels as channel models. Expand
Channel estimation in two dimensions for OFDM systems with multiple transmit antennas
  • G. Auer
  • Computer Science
  • GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)
  • 2003
TLDR
This work applies the concept of using two one-dimensional estimators instead of a truly two dimensional estimator to pilot-symbol aided channel estimation for orthogonal frequency division multiplexing (OFDM) based systems, employing multiple transmit antennas. Expand
OFDM channel estimation by singular value decomposition
TLDR
The theory of optimal rank-reduction is applied to linear minimum mean-squared error (LMMSE) estimators and it is shown that these estimators, when using a fixed design, are robust to changes in channel correlation and signal-to-noise ratio (SNR). Expand
Channel estimation for OFDM transmission in multipath fading channels based on parametric channel modeling
TLDR
It is demonstrated that the use of the parametric channel model can effectively reduce the signal subspace dimension of the channel correlation matrix for the sparse multipath fading channels and, consequently, improve the channel estimation performance. Expand
An Introduction to Orthogonal Frequency Division Multiplexing
Orthogonal Frequency Division Multiplexing (OFDM) is one of the latest modulation techniques used in order to combat the frequency-selectivity of the transmission channels, achieving high data rateExpand
Low-rank adaptive filters
  • P. Strobach
  • Mathematics, Computer Science
  • IEEE Trans. Signal Process.
  • 1996
TLDR
A class of adaptive filters based on sequential adaptive eigendecomposition (subspace tracking) of the data covariance matrix that can be computationally less (or even much less) demanding, depending on the order/rank ratio N/r or the compressibility of the signal. Expand
...
1
2
...