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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Efficient bidirectional DFE for doubly selective wireless channels
TL;DR: Simulations performed on time-varying channels show that the proposed structure significantly outperforms existing architectures.
Proceedings ArticleDOI
2-Step Frequency-Domain Channel Estimation for Training Sequence Inserted Single-Carrier Block Transmission
Tetsuya Yamamoto,Fumiyuki Adachi +1 more
TL;DR: It is shown that the proposed frequency-domain channel estimation scheme achieves a BER performance close to the perfect channel estimation.
Journal ArticleDOI
Pre- and Post-Equalization and Frequency Diversity Combining Methods for Block Transmission with Cyclic Prefix ∗
TL;DR: The performance of the proposed equalization and diversity combining methods for block transmission schemes with cyclic prefix, including bit-error rate performance and peak-to-average power ratios of the transmitted signal, is demonstrated via computer simulations.
Journal ArticleDOI
Transmultiplexer frequency domain equalization for direct sequence spread spectrum
TL;DR: Simulation results confirm that for a slowly fading channel, performance similar to other frequency domain equalizers and superior to maximal ratio Rake combining can be achieved with the transmultiplexer solution.
Journal ArticleDOI
Linear and Nonlinear Time Domain Block Equalizers on MIMO Frequency Selective Channels
Cong Li,Yasunori Iwanami +1 more
TL;DR: In this article, the authors proposed the block linear equalization and signal separation schemes in time domain for short block length transmission, and compared the computational complexity among the conventional SC-FDE (Frequency Domain Equalization) scheme and the proposed equalizers.
References
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Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
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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
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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.