OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
Joint Carrier-Frequency Offset and Channel Estimation for MIMO-OFDM Transmission
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Joint CFO and Channel Estimation for Multiuser MIMO-OFDM Systems With Optimal Training Sequences
IEEE Transactions on Signal Processing - Part II
Implementation of a MIMO OFDM-based wireless LAN system
IEEE Transactions on Signal Processing
Effect of Carrier Frequency Offset on Channel Estimation for SISO/MIMO-OFDM Systems
IEEE Transactions on Wireless Communications
Synchronization algorithms for MIMO OFDMA systems
IEEE Transactions on Wireless Communications
Fast Synchronization and Channel Estimation for OFDM Systems
Wireless Personal Communications: An International Journal
LDPC-Coded Cooperation with Receive Multi-Antenna and Unknown CSI in the Destination
Wireless Personal Communications: An International Journal
Hi-index | 0.00 |
In this paper, we investigate the problem of carrier frequency-offset (CFO) synchronization and channel estimation in multiple-input multiple-output orthogonal frequency-division multiplexing systems operating over unknown frequency-selective fading channels. We first propose a novel joint CFO and channel estimator, assuming time-domain training blocks are available. The proposed joint estimator consists of two recursive least-square (RLS) algorithms which iterate their estimated CFO and CIR values. We then derive a more precise pilot-aided RLS algorithm to estimate the residual frequency synchronization errors or track small CFO changes. With this, the accuracy of channel estimation is also enhanced. The analysis and simulation results show that, the proposed estimation and tracking scheme which is fully compatible with the existing standards is able to attain fast convergence, high stability, and ideal performances as compared with relevant Cramer---Rao bounds in all ranges of signal-to-noise ratio. Moreover, it can work well for wide tracking range up to 卤0.5 of the subcarrier spacing.