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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Single-carrier transmission using qrm-mld with antenna diversity
TL;DR: In this paper, the authors applied maximum likelihood detection employing QR decomposition and M-algorithm (QRM-MLD) to the SC signal detection with antenna diversity reception.
Patent
Method and system for transmitting signals with reduced spurious emissions
TL;DR: An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes.
Proceedings ArticleDOI
Frequency domain pre-equalization with transmit diversity for MISO broadband wireless communications
R.L.-U. Choi,Ross D. Murch +1 more
TL;DR: A frequency domain pre-equalization scheme with multiple transmit antennas to combat intersymbol interference and fading in the downlink of broadband wireless communications and can obtain transmit antenna diversity as well as frequency diversity.
Proceedings ArticleDOI
Single carrier frequency domain equalization with noise prediction for broadband wireless systems
Yu Zhu,Khaled Ben Letaief +1 more
TL;DR: It is demonstrated that the performance complexity tradeoff of the proposed scheme can be obtained by only changing the order of the noise predictor, in contrast to the conventional FD-DFE scheme where both the ME and the time domain feedback filter must be modified simultaneously.
Journal ArticleDOI
EM-Based Joint Channel Estimation and Detection for Frequency Selective Channels Using Gaussian Message Passing
Qinghua Guo,Defeng Huang +1 more
TL;DR: The complexity of the proposed approach grows logarithmically with the length of the observation vector, enabling an efficient handling of (quasi-static and time-varying) frequency selective channels with a large number of channel taps.
References
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Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
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Journal ArticleDOI
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Journal ArticleDOI
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