Optimum transmit filter for Single-Carrier FDMA with Frequency-Domain Linear Equalization

Noune, Mohamed; Nix, Andrew R

doi:10.1109/pimrc.2009.5450000

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…Compared with non-adaptive OFDM, SC-FDE has significantly lower PAPR and bit error rate (BER) [15]. However, the achievable rate of SC-FDE is dominated by the worst frequency subchannel gain, while SC-FDE with channel-adaptive power control provides higher throughput but at the cost of increased PAPR [16]. Moreover, generalized frequency division multiplexing (GFDM) was recently proposed [17], which includes OFDM and SC-FDE as two special cases.…”

Section: Introductionmentioning

confidence: 99%

Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization

Yang

Zhang

Lie³

et al. 2018

2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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Orthogonal frequency division multiplexing (OFDM) and singlecarrier frequency domain equalization (SC-FDE) are two commonly adopted modulation schemes for frequency-selective channels. Compared to SC-FDE, OFDM generally achieves higher data rate, but at the cost of higher transmit signal peak-to-average power ratio (PAPR) that leads to lower power amplifier efficiency. This paper proposes a new modulation scheme, called flexible multi-group single-carrier (FMG-SC), which encapsulates both OFDM and SC-FDE as special cases, thus achieving more flexible rate-PAPR trade-offs between them. Specifically, a set of frequency subcarriers are flexibly divided into orthogonal groups based on their channel gains, and SC-FDE is applied over each of the groups to send different data streams in parallel. We aim to maximize the achievable sum-rate of all groups by optimizing the subcarrier-group mapping. We propose two low-complexity subcarrier grouping methods and show via simulation that they perform very close to the optimal grouping by exhaustive search. Simulation results also show the effectiveness of the proposed FMG-SC modulation scheme with optimized subcarrier grouping in improving the rate-PAPR trade-off over conventional OFDM and SC-FDE.

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Section: Introductionmentioning

confidence: 99%

Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization

Yang

Zhang

Lie³

et al. 2018

2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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“…However, when a suboptimal receiver is used, such as the ZF or MMSE frequency-domain linear equalizer, the waterfilling spectrum must be suitably modified [8]. In [9], we have shown that the transmit power allocation scheme in [8], initially proposed for SC-FDE, can be extended to SC-FDMA, in order to exploit the sub-channelization gain in SC-FDMA. As a result, the system can generate multi-user diversity through channel dependent scheduling, or generate a frequency diversity gain through frequency hopping.…”

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confidence: 99%

Joint Tomlinson-Harashima Precoding and Optimum Transmit Power Allocation for SC-FDMA

Noune

Nix

2010

2010 IEEE Wireless Communication and Networking Conference

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Abstract-Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard. SC-FDMA has reduced sensitivity to phase noise and a lower Peak-to-Average Power Ratio (PAPR) compared to Orthogonal Frequency Division Multiple Access. In this paper we propose joint TomlinsonHarashima Precoding and transmit power allocation for SC-FDMA. We derive the optimum power allocation for SC-FDMA transmission for both Zero-Forcing (ZF) and Minimum MeanSquare Error (MMSE) LE receivers in order to maximize the achievable data rate subject to constant transmit power. Although this improves the system's performance and offers a 1-2 dB improvement over Frequency-Domain Decision Feedback Equalization (FD-DFE), when the proposed transmit power allocation scheme is combined with decision feedback equalization the system incurs a performance degradation due to error propagation. In this paper we propose a joint implementation of the derived power allocation scheme with THP. Here we show that the system's performance is further improved over both FD-LE and FD-DFE when transmit power allocation is applied.

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Cyclic interleaving scheme for an IFDMA system

Kumar

Stuwart

2020

Ann. Telecommun.

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Optimum transmit filter for Single-Carrier FDMA with Frequency-Domain Linear Equalization

Cited by 8 publications

References 7 publications

Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization

Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization

Joint Tomlinson-Harashima Precoding and Optimum Transmit Power Allocation for SC-FDMA

Cyclic interleaving scheme for an IFDMA system

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