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
Multiple transmit antennas for low PAPR spatial modulation in SC-FDMA: single vs. multiple streams
TL;DR: In this paper, the general design criteria for low PAPR spatial modulation (LPSM) implemented in SC-FDMA systems with multiple transmit antennas is provided and the straightforward generalization of LPSM is derived and it is shown that it requires the number of transmit antennas to be doubled in order to add another bit in the spatial component.
Proceedings Article
Digital signal processing techniques to compensate for RF imperfections in advanced transmitter architectures
TL;DR: It is demonstrated that the strategy for developing new transmitter architecture has to be based on a total interaction between digital signal processing and pure radio concepts to compensate for RF imperfections.
Patent
Systems/methods of adaptively varying a bandwidth and/or frequency content of communications
TL;DR: In this article, a set of frequencies that are used to provide frequency content to elements of a waveform alphabet, used to form the transmitted waveform, is varied thus varying a frequency content of the transmitted signal.
Proceedings ArticleDOI
Multiuser channel estimation for SC-FDMA system with CAZAC sounding reference sequence and Instruments-in-MATLAB verification
TL;DR: The CAZAC (constant amplitude zero autocorrelation) property of Zadoff-Chu sounding reference sequence is exploited to accomplish multiuser (MU) channel estimation in this paper.
Proceedings ArticleDOI
Single-carrier frequency domain equalization for broadband cooperative communications
TL;DR: This paper investigates single carrier frequency-domain equalization (SC-FDE) for distributed space-time block codes (D-STBC) in a relay-assisted transmission scenario over frequency-selective fading channels and shows that the smaller of the multipath diversity orders experienced in S rarr R and R rarr D links becomes the performance bottleneck for the relays.
References
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OFDM for Wireless Multimedia Communications
Richard van Nee,Ramjee Prasad +1 more
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.
Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
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Transmission techniques for digital terrestrial TV broadcasting
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Journal ArticleDOI
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Zhu Han,Ji Zhu,K.J.R. Liu +2 more
TL;DR: The proposed algorithms not only provide fair resource allocation among users, but also have a comparable overall system rate with the scheme maximizing the total rate without considering fairness, and have much higher rates than that of the scheme with max-min fairness.
Journal ArticleDOI
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Hannes Ekström,Anders Furuskär,Jonas Karlsson,Michael Meyer,Stefan Parkvall,Johan Torsner,M. Wahlqvist +6 more
TL;DR: Promising technologies to fulfil 3G evolution targets are presented, including OFDM, multi-antenna solutions, evolved QoS and link layer concepts, and an evolved architecture, indicating that the requirements can indeed be reached using the proposed technologies.
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