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
More filters
Journal ArticleDOI
Subspace Beamforming for Near-Capacity MIMO Performance
TL;DR: The proposed subspace GMD scheme requires only two layers of detection/decoding, regardless of the total number of subchannels, thus alleviating the latency issue associated with conventional GMD, and makes the optimization of ML beamforming and ML detection itself feasible for any K timesK MIMO system.
Proceedings ArticleDOI
Frequency-Domain Channel Estimation and Equalization for Broadband Wireless Communications
Yahong Rosa Zheng,Chengshan Xiao +1 more
TL;DR: In this paper, the authors employ interpolation method to develop channel estimation algorithm in the frequency domain, which can track time-varying fading channels with Doppler up to 300-400 Hz.
Journal ArticleDOI
Robust Channel Estimation for Coherent Optical Orthogonal Chirp-Division Multiplexing With Pulse Compression and Noise Rejection
TL;DR: It is shown that the proposed estimator outperforms conventional estimators, such as the intrasymbol frequency-domain average estimator, especially when the dispersion is severe, and numerical results are provided to confirm the advantages of the CO-OCDM system with the proposed channel estimation algorithm.
Proceedings ArticleDOI
Frequency-domain Space-Time Block Coded-Joint Transmit/Receive Diversity for The Single Carrier Transmission
TL;DR: This paper extends the proposed space-time block coded-joint transmit/receive diversity (STBC-JTRD) to the case of frequency-selective fading channel and proposes the frequency-domain STBC- JTRD for the SC transmission in a frequency- selective fades channel.
Proceedings ArticleDOI
Frequency-Domain Multipacket Detection: A High Throughput Technique for SC-FDE Systems
TL;DR: A frequency-domain multi- packet detection technique for SC-FDE schemes (Single- Carrier with Frequency-Domain Equalization) that allows an efficient packet separation in the presence of successive collisions.
References
More filters
Book
Adaptive Filter Theory
TL;DR: In this paper, the authors propose a recursive least square adaptive filter (RLF) based on the Kalman filter, which is used as the unifying base for RLS Filters.
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.