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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Proceedings ArticleDOI
A survey of uplink multiple access techniques in LTE mobile communication system
Kussum Bhagat,Jyoteesh Malhotra +1 more
TL;DR: The comparison between Orthogonal Frequency Division Multiple Access (OFDMA) and Single-carrier frequency division multiple access (SC-FDMA) techniques is provided.
Low Complexity CFO Compensation Scheme for SC-FDMA Uplink System
TL;DR: A low- complexity ZF method and Newton's method with fast Fourier transforms which is used to solve the matrix inversion problem is proposed and reduces the complexity from O(N).
Proceedings ArticleDOI
PAPR improvement in opportunistic communication systems: A novel approach
Subha P. Eswaran,Jyotsna Bapat +1 more
TL;DR: A spectrum allocation algorithm that takes into account system requirements for resource efficiency and proposes a DFT of appropriate size for spectrum spreading such that localized SC-FDMA may be implemented at the UE to reduce PAPR is proposed.
Proceedings ArticleDOI
LTE network planning based on existing base transceiver using a genetic algorithm
TL;DR: An implementation of genetic algorithm in Long Term Evolution (LTE) Network planning for Sleman region case that has 119 2G/3G existing base transceivers that has the maximum coverage shows that the optimization result of district area has better performance than the optimized result of region area.
Dissertation
PAPR Analysis and Channel Estimation Techniques for 3GPP LTE System
TL;DR: In this paper, the authors have compared various channel estimation techniques used in OFDM systems and implemented various kinds of pulse shaping filters and compared the PAPR for IFDMA, DFDMA and LFDMA (kinds of SCFDMA) with different subcarrier mapping.
References
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