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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Low Complexity Frequency-Domain Despreading for
Pin-Hsun Lin,Tzi-Dar Chiueh +1 more
TL;DR: In this paper, a frequency-domain despreading method for the cyclic-prefix code-division multiple-access (CP-CDMA) system is introduced using the orthogonality trans-formation property of the discrete Fourier transform (DFT).
Journal ArticleDOI
Noise-predictive equalization for unique-word based single-carrier systems
Xiaolin Che,Chen He,Lingge Jiang +2 more
TL;DR: Two noise-predictive equalization schemes, which are based on zero-forcing (ZF) and minimum mean square error (MMSE) criteria, are presented for unique-word (UW) based single-carrier systems and theoretical analyses show that they perform better than the conventional frequency domain equalizers.
Proceedings ArticleDOI
A multiplexed transmission scheme with unequal error protection on MIMO frequency selective channels
TL;DR: In this article, the authors have focused on an Unequal error protection (UEP) using different modulation schemes, and they have used the multiplexed transmission using the CDM (Code Division Multiplex).
Journal ArticleDOI
Beam squint effect on high-throughput millimeter-wave communication with an ultra-massive phased array
TL;DR: In this article, an advanced analog beamforming method based on the Zadoff-Chu (ZC) sequence was proposed to eliminate the deep fading points in the spatial equivalent channel.
Proceedings ArticleDOI
A Novel Receiver Design for Training Sequence Inserted OFDM Transmission
Tetsuya Yamamoto,Fumiyuki Adachi +1 more
TL;DR: A new receiver design is proposed, which can obtain the frequency diversity gain through the use of frequency-domain equalization (FDE) for TS-OFDM, and the conditional bit error rate (BER) analysis of the proposed FDE is presented.
References
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Journal ArticleDOI
Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
TL;DR: The analysis and simulation of a technique for combating the effects of multipath propagation and cochannel interference on a narrow-band digital mobile channel using the discrete Fourier transform to orthogonally frequency multiplex many narrow subchannels, each signaling at a very low rate, into one high-rate channel is discussed.
Journal ArticleDOI
BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise
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.
Journal ArticleDOI
Polyphase codes with good periodic correlation properties (Corresp.)
TL;DR: This correspondence describes the construction of complex codes of the form exp i \alpha_k whose discrete circular autocorrelations are zero for all nonzero lags.