Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
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TLDR
This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions and discusses similarities and differences of SC and OFDM systems and coexistence possibilities, and presents examples of SC-FDE performance capabilities.Abstract:
Broadband wireless access systems deployed in residential and business environments are likely to face hostile radio propagation environments, with multipath delay spread extending over tens or hundreds of bit intervals. Orthogonal frequency-division multiplex (OFDM) is a recognized multicarrier solution to combat the effects of such multipath conditions. This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions. SC radio modems with frequency domain equalization have similar performance, efficiency, and low signal processing complexity advantages as OFDM, and in addition are less sensitive than OFDM to RF impairments such as power amplifier nonlinearities. We discuss similarities and differences of SC and OFDM systems and coexistence possibilities, and present examples of SC-FDE performance capabilities.read more
Citations
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Proceedings ArticleDOI
An interference alignment based precoder design using channel statistics for OFDM systems with insufficient cyclic prefix
Yuansheng Jin,Xiang-Gen Xia +1 more
TL;DR: An interference alignment (IA) based precoder design for OFDM with insufficient cyclic prefix (CP) when only the statistics of channel coefficients is known at the transmitter is proposed, which minimizes the MSE in a linear MMSE receiver and therefore improves the BER performance.
Journal ArticleDOI
Single-Carrier Frequency-Domain Equalization With Hybrid Decision Feedback Equalizer for Hammerstein Channels Containing Nonlinear Transmit Amplifier
TL;DR: A nonlinear hybrid decision feedback equalizer (NHDFE) for single-carrier block transmission systems with nonlinear transmit high power amplifier (HPA) is proposed, which significantly outperforms the authors' previous nonlinear SC frequency-domain equalization (NFDE) design.
Journal ArticleDOI
Optimal pilot superimposition for zero-padded block transmissions
Qingyu Zhu,Zhiqiang Liu +1 more
TL;DR: This paper develops an optimal pilot superimposition scheme for zero-padded single-carrier transmissions and proves that the optimal pilot sequence should contain only asingle non-zero pilot symbol, and this single non- zero pilot symbol must be placed within the guard interval depending on the channel power profile.
Proceedings ArticleDOI
Overlap QRM-ML Block Signal Detection for Single-Carrier Transmission without CP Insertion
TL;DR: An overlap QRM-MLBD which requires no CP insertion is proposed which can be suppressed by overlapping consecutive observation windows and picking up only the reliable part after the block signal detection.
Proceedings ArticleDOI
Design of optimum physical layer architecture for a high data rate LTE uplink transceiver
G. Indumathi,D. A. Joe +1 more
TL;DR: The main objective of this paper is to design optimum physical layer architecture of a high data rate LTE uplink transceiver using SC-FDMA multiple access scheme with error correction mechanism using Low dense parity check codes (LDPC) to provide lesser Bit Error Rate (BER) and avoiding packet loss by Interleaving.
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Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
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TL;DR: In this contribution the transmission of M-PSK and M-QAM modulated orthogonal frequency division multiplexed (OFDM) signals over an additive white Gaussian noise (AWGN) channel is considered and the degradation of the bit error rate is evaluated.
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