Time-domain and frequency-domain per-tone equalization for OFDM over doubly selective channels
Signal Processing - Signal processing in communications
Low-complexity banded equalizers for OFDM systems in Doppler spread channels
EURASIP Journal on Applied Signal Processing
Semidefinite relaxation based multiuser detection for M-ary PSK multiuser systems
IEEE Transactions on Signal Processing - Part I
IEEE Transactions on Signal Processing
On the complexity of sphere decoding in digital communications
IEEE Transactions on Signal Processing
Low-complexity equalization of OFDM in doubly selective channels
IEEE Transactions on Signal Processing
On the sphere-decoding algorithm I. Expected complexity
IEEE Transactions on Signal Processing - Part I
ML estimation of time and frequency offset in OFDM systems
IEEE Transactions on Signal Processing
ICI mitigation for pilot-aided OFDM mobile systems
IEEE Transactions on Wireless Communications
ICI cancellation for OFDM communication systems in time-varying multipath fading channels
IEEE Transactions on Wireless Communications
A universal lattice code decoder for fading channels
IEEE Transactions on Information Theory
On maximum-likelihood detection and the search for the closest lattice point
IEEE Transactions on Information Theory
A Near-Maximum-Likelihood Decoding Algorithm for MIMO Systems Based on Semi-Definite Programming
IEEE Transactions on Information Theory
The Diversity Order of the Semidefinite Relaxation Detector
IEEE Transactions on Information Theory
The application of semidefinite programming for detection in CDMA
IEEE Journal on Selected Areas in Communications
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OFDM data detection in doubly-selective fading channels requires high complexity due to intercarrier interferences (ICI). We present a low-complexity receiver consisting of a semidefinite relaxation (SDR) based detector and parallel interference cancellation (PIC). The entire band is divided into clusters of adjacent subcarriers. SDR is applied on each cluster while PIC tackles ICI from other clusters. An upper bound of ICI power is derived and used to omit far-away clusters in performing PIC. Finally, an adaptive detector based on PIC, PIC-based SDR and the snap-shot SNR in channel is proposed to achieve a better tradeoff between complexity and performance.