Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
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
Iterative decision-feedback channel estimation for turbo SIC in DFT-precoded OFDMA using QO-STBC
TL;DR: By applying the proposed iterative DFCE in the turbo SIC, the required average received signal-to-noise power ratio (SNR) at the average block error rate (BLER) of 10−2 is decreased and the ICI due to non-orthogonality in the QO-STBC improves, which leads to improvement in the achievable performance.
Journal ArticleDOI
Frequency-Domain QR-Decomposed and Equalized MLD for Single-Carrier MIMO Systems over Multipath Fading Channels
TL;DR: This letter describes a new QR-decomposition maximum likelihood detector that is combined with frequency-domain equalization for single-carrier transmission based multiple-input multiple-output systems that is superior to the minimum mean squared error receiver.
Proceedings ArticleDOI
Frequency Domain Hybrid-ARQ Chase Combining for Broadband MIMO Communication with Co-Channel Interference
TL;DR: A new frequency domain turbo combining scheme where multiple transmissions are combined at the signal level using soft minimum mean square error (MMSE) processing, which allows to recursively combine received signal packets in the frequency domain.
Journal ArticleDOI
Throughput Evaluation of Oversampled Receiver: An Example of WiMAX System
TL;DR: Theoretical analyzes, simulations and experimental results clearly show that the oversampled receiver significantly outperforms the spectrum efficiency of the communication system.
Proceedings ArticleDOI
Efficient receivers for SC-FDE with offset modulations
TL;DR: This paper presents pragmatic FDE receivers for offset modulations that have low complexity but allow excellent performance, even for large and highly non-uniform offset QAM constellations.
References
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Journal ArticleDOI
Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
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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.