Two-dimensional pilot-symbol-aided channel estimation by Wiener filtering

Hoeher, Peter Adam; Kaiser, Stefan; Robertson, Patrick

doi:10.1109/icassp.1997.598897

Cited by 505 publications

(326 citation statements)

References 8 publications

Supporting

Mentioning

324

Contrasting

Unclassified

Order By: Relevance

“…Assuming each path has the same normalized time-correlation function r t (∆i) with different average power σ 2 l , the correlation can be decomposed as [1], [2] …”

Section: Copyright C 2007 the Institute Of Electronics Information Amentioning

confidence: 99%

“…However, it may not practically be applicable due to a large amount of information for the channel modeling. Although the use of a 3-D Wiener channel estimation filter (CEF), which is an easy extension of 2-D Wiener CEFs in single antenna systems [1], can provide the optimum performance in the minimum mean square error sense, it may not be implementable in practice because of a large number of filter taps. Recently, the use of maximum likelihood (ML) in the frequency domain and 2-D Wiener methods in the time/space domain has been considered [7].…”

Section: Introductionmentioning

confidence: 99%

“…However, it results in performance degradation compared to the 3-D Wiener CEF and only considers the correlation between the receive antennas. In this letter, extending the idea in [1], [2] of employing separate CEFs in each domain to MIMO-OFDM systems, we propose a low-complexity Wiener filter structure where Wiener filtering is performed independently in each domain with near optimum performance. Following Introduction, the system and channel model are described in Sect.…”

Section: Introductionmentioning

confidence: 99%

“…To increase the throughput of OFDM, it is crucial to accurately measure the channel impulse response (CIR). For a single-input single-output (SISO) system, a number of 2-dimensional (2-D) channel estimation (CE) schemes have been studied, where the channel correlation in the time and frequency domain is widely considered [1], [2].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Complexity-Reduced Channel Estimation in Spatially Correlated MIMO-OFDM Systems

Choi¹,

Lee²

2007

IEICE Transactions on Communications

View full text Add to dashboard Cite

SUMMARYThe performance of a MIMO-OFDM system significantly depends upon the accuracy of the channel impulse response (CIR) estimates. In the presence of correlation between the CIRs of the transmit or receive antennas, it is desirable to exploit this correlation to improve the performance of CIR estimation. In this letter, we propose a low-complexity channel estimation filter composed of four concatenated one-dimensional Wiener filters which are optimized to the channel characteristics in the time and frequency domains, and the transmit and receiver antenna front ends, respectively. Finally, the performance of the proposed scheme is verified.

show abstract

“…Assuming each path has the same normalized time-correlation function r t (∆i) with different average power σ 2 l , the correlation can be decomposed as [1], [2] …”

Section: Copyright C 2007 the Institute Of Electronics Information Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Complexity-Reduced Channel Estimation in Spatially Correlated MIMO-OFDM Systems

Choi¹,

Lee²

2007

IEICE Transactions on Communications

View full text Add to dashboard Cite

show abstract

“…With this, network operators are expecting to achieve high data rates. The recent advanced technologies like Long Term Evolution (LTE) and its Advanced (LTE-A) version is also using OFDM [9,13]. The efficiency of the service of a broadband wireless networks depends on the use of multiple antennas at transmitter/receiver.…”

Section: Introductionmentioning

confidence: 99%

Hardware Implementation of MISO on Orthogonal Frequency Division Multiplexing Platform with the Help of Alamouti Algorithm

Kilaru¹

2017

International Journal of Electronics and Telecommunications

View full text Add to dashboard Cite

Abstract-Many software based OFDM techniques were proposed from last half decade to improve the performance of the system. This paper tried to implement the same with Hardware implementation. We created Hardware based MISO platform with OFDM. We implemented Alamouti algorithm on this test bed. The test bed is implemented with the help of Field Programmable Gate Array (FPGA). The test bed is functionalized with the help of FPGA through Xilinx based system generator for DSP. In this paper we considered the 2×1 MISO implementation with Alamouti algorithm. The simulation results showed that BER and SNR are considerably high for MISO than SISO. The results also proved that proposed OFDM based Alamouti implementation for MISO is excellent in all performance criterions.

show abstract

Digital transmission techniques for a long haul HF link: DSSS versus OFDM

et al. 2014

View full text Add to dashboard Cite

This paper presents two digital transmission techniques for long haul ionospheric links. Since 2003 we have studied the HF link between the Antarctic Spanish Base, Juan Carlos I, and Spain; and we have described the link in terms of availability, signal-to-noise ratio, and delay and Doppler power profile. Based on these previous studies we have developed a test bed to investigate two digital transmission techniques, i.e., Direct-Sequence Spread Spectrum (DSSS) and Orthogonal Frequency Division Multiplexing (OFDM), which can provide a low power, low-rate ionospheric data link from Antarctica. Symbol length, bandwidth, and constellation are some of the features that are analyzed in this work. Data gathered from the link throughout the 2010/2011 and 2011/2012 Antarctic surveys show that the spread spectrum techniques can be used to transmit data at low rate when the channel forecast is poor, but when the channel forecast is good multicarrier techniques can be used to transmit sporadic bursts of data at higher rate.

show abstract

Two-dimensional pilot-symbol-aided channel estimation by Wiener filtering

Cited by 505 publications

References 8 publications

Complexity-Reduced Channel Estimation in Spatially Correlated MIMO-OFDM Systems

Complexity-Reduced Channel Estimation in Spatially Correlated MIMO-OFDM Systems

Hardware Implementation of MISO on Orthogonal Frequency Division Multiplexing Platform with the Help of Alamouti Algorithm

Digital transmission techniques for a long haul HF link: DSSS versus OFDM

Contact Info

Product

Resources

About