A novel frequency domain equalization method for single-carrier wireless transmissions over doubly-selective fading channels

Ng, B.K.; Falconer, D.D.

doi:10.1109/glocom.2004.1377946

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…However, when the data rate increases, the number of resolvable paths increases as well and the complexity of MLSE grows exponentially as a result. Compared to the time domain equalization techniques, frequency domain equalization (FDE) [3], which is not a function of the channel frequency selectivity, has much less complexity.…”

Section: Introductionmentioning

confidence: 99%

Multi-User Downlink Transmit Beamforming for the Broadband Single-Carrier Distributed Antenna Network

Peng

Adachi

2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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Abstract-This paper studies the multi-user downlink transmit beamforming algorithms for the broadband single-carrier distributed antenna network (SC-DAN). The distributed antennas will be used as antenna arrays by using transmit beamforming. In this work, the beamforming weight is designed in order to avoid the interference cancellation from the mobile terminals. Two methods are adopted. One is to use the maximum ratio transmission (MRT) beamforming weight to maximize the desired signal's power at each mobile terminal. The other one is to use the null steering beamforming weight to minimize the interference power at each mobile terminal. The beamforming algorithms using the two methods are described and their performances are compared by computer simulations.

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Section: Introductionmentioning

confidence: 99%

Multi-User Downlink Transmit Beamforming for the Broadband Single-Carrier Distributed Antenna Network

Peng

Adachi

2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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“…The problem of FDE in time varying channels has been treated sparsely in different directions. For example, using the basis extension model (BEM), the authors in [6] presented iterative FDE with widely linear filtering. In [7], the windowing technique was utilized to transform the channel matrix into a banded form.…”

Section: Introductionmentioning

confidence: 99%

A frequency domain equalization algorithm for fast time-varying fading channels

2009

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Conventional frequency domain equalization (FDE) schemes were originally devised for quasi-static channels. Thus, such equalization schemes could suffer from significant performance degradation in fast-fading channels. This paper proposes a frequency domain equalization algorithm to mitigate the effect of fast time-varying fading. First, a mathematical expression is derived to quantify the total interference resulting from the time variation of the channel. Then, the proposed approach attempts to eliminate the effect of time-variations of the channel. This cancellation allows efficient use of the classical FDE structures in fast time-varying fading environments, although they are built upon the quasi-static channel model. Simulation results of bit-error-rate performance are provided to demonstrate the effectiveness of the proposed algorithm.Index Terms: Cancellation, direct sequence code division multiple access (DS-CDMA), fast time-varying fading channels, frequency domain equalization (FDE).

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“…Many schemes have been proposed to compensate the performance degradation due to high Doppler. The ICI cancellation schemes are proposed in paper [1,2,3], in which the iterative detection is exploited to eliminate the ICI due to Doppler based on the interference cancellation technique from multi-user detection (MUD) in Code Division Multi-Access (CDMA) system. This method induces the multistage procession delay due to its iterative calculations and its performance is very sensitive to the accuracy of the initial detection because of error propagation problem.…”

Section: Introductionmentioning

confidence: 99%

The Single-Carrier Frequency Domain Equalization Transceiver with Self-Cancellation

Tan

Chen

et al. 2007

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications

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Although frequency domain equalization (FDE) is very efficient to resist frequency selective fading in single-carrier communications, its performance will be greatly degraded due to high Doppler impact in a fast moving environment. To enhance the system performance of single-carrier communication system with FDE (SC-FDE), the selfcancellation technique is migrated from orthogonal frequency division multiplexing system (OFDM). It can obtain significant performance gain in scenarios with high Doppler in numerical simulations.

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A novel frequency domain equalization method for single-carrier wireless transmissions over doubly-selective fading channels

Cited by 10 publications

References 4 publications

Multi-User Downlink Transmit Beamforming for the Broadband Single-Carrier Distributed Antenna Network

Multi-User Downlink Transmit Beamforming for the Broadband Single-Carrier Distributed Antenna Network

A frequency domain equalization algorithm for fast time-varying fading channels

The Single-Carrier Frequency Domain Equalization Transceiver with Self-Cancellation

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