Journal ArticleDOI
Single carrier FDMA for uplink wireless transmission
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TLDR
Among the possible subcarrier mapping approaches, it is found that localizedFDMA (LFDMA) with channel-dependent scheduling (CDS) results in higher throughput than interleaved FDMA (JFDMA), however, the PARR performance of IFDMA is better than that of LFDMA.Abstract:
Single carrier frequency division multiple access (SC FDMA), a modified form of orthogonal FDMA (OFDMA), is a promising technique for high data rate uplink communications in future cellular systems. SC-FDMA has similar throughput performance and essentially the same overall complexity as OFDMA. A principal advantage of SC-FDMA is the peak-to-average power ratio (PARR), which is lower than that of OFDMA. SC FDMA is currently a strong candidate for the uplink multiple access scheme in the long term evolution of cellular systems under consideration by the third generation partnership project (3GPP). In this paper, we give an overview of SC-FDMA. We also analyze the effects of subcarrier mapping on throughput and PARR. Among the possible subcarrier mapping approaches, we find that localized FDMA (LFDMA) with channel-dependent scheduling (CDS) results in higher throughput than interleaved FDMA (JFDMA). However, the PARR performance of IFDMA is better than that of LFDMA. As in other communications systems there are complex tradeoffs between design parameters and performance in an SC-FDMA systemread more
Citations
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Journal ArticleDOI
Time Spread-Windowed OFDM for Spectral Efficiency Improvement
TL;DR: This letter proposes a new orthogonal frequency division multiplexing (OFDM)-based waveform, called time spread-windowed OFDM (TS-W-OFDM), which applies a windowing procedure to improve spectral efficiency and a time spreading method to create a block signal structure.
Journal ArticleDOI
MMSE beamforming for SC-FDMA transmission over MIMO ISI channels
TL;DR: It is proved that for SC-FDMA transmission in both cases eigenbeamforming, diagonalizing the overall channel, together with a nonuniform power distribution is the optimum beamforming strategy.
Patent
Method and/or ofdm device for sc-fdma data transmission
Andreas Forck,Holger Gaebler,Thomas Haustein,Thomas Hindelang,Volker Jungnickel,Wolfgang Zirwas +5 more
TL;DR: In this article, a method and/or an OFDM device for SC-FDMA data transmission in which a sequence of input data (x(i), i = 1, 2, 3,..., N) is transformed by means of a discrete transformation (DFT) as transformed data signals (yi, i, i = 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 12) of coded and modulated data signals on first frequency channels (f1, f2, f3,..., f4,..., n
Proceedings ArticleDOI
Performance analysis of OFDMA, MIMO and SC-FDMA technology in 4G LTE networks
TL;DR: The performance of OFDMA, MIMO and SC-FDMA in LTE at physical layer is analyzed by considering different modulation schemes such as BPSK, QPSk, 16 QAM by using BER and SNR as parameters.
Journal ArticleDOI
Dedicated Return Channel for ATSC 3.0
TL;DR: The design of DRC as well as several implementation concerns are introduced and comparisons with typical techniques are carried out in terms of bit error rate, access probability, resource utilization, etc.
References
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TL;DR: In this paper, the authors present a comprehensive introduction to OFDM for wireless broadband multimedia communications and provide design guidelines to maximize the benefits of this important new technology, including modulation and coding, synchronization, and channel estimation.
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