Trained Space-Time Block Decoding for Flat Fading Channels with Frequency Offsets
Wireless Personal Communications: An International Journal
Joint Time-Domain Tracking of Channel and Frequency Offsets for MIMO OFDM Systems
Wireless Personal Communications: An International Journal
A New Iterative Decoder of Space-Time Data in Time Selective MIMO Channels
Wireless Personal Communications: An International Journal
Performance analysis of space-time block codes in flat fading MIMO channels with offsets
EURASIP Journal on Wireless Communications and Networking
MIMO-OFDM channel estimation in the presence of carrier frequency offset
EURASIP Journal on Applied Signal Processing
Wireless Personal Communications: An International Journal
A Novel Frequency Offset Estimation Method for Distributed MIMO Systems with Large Estimation Range
RSKT '09 Proceedings of the 4th International Conference on Rough Sets and Knowledge Technology
Joint timing error, frequency offset and channel estimation for MIMO systems
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Carrier frequency offset estimation for multi-user MIMO OFDM uplink using CAZAC sequences
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Parameter Estimation for Correlated MIMO Channels with Frequency-Selective Fading
Wireless Personal Communications: An International Journal
A novel MAP estimation algorithm for multiple frequency offsets in distributed MIMO system
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Joint estimation of I/Q imbalance, CFO and channel response for MIMO OFDM systems
IEEE Transactions on Communications
Simple, zero-feedback, distributed beamforming with unsynchronized carriers
IEEE Journal on Selected Areas in Communications - Special issue on simple wireless sensor networking solutions
SAGE based joint timing-frequency offsets and channel estimation in distributed MIMO systems
Computer Communications
Coordinated multi-cell systems: carrier frequency offset estimation and correction
IEEE Journal on Selected Areas in Communications - Special issue on cooperative communications in MIMO cellular networks
EURASIP Journal on Wireless Communications and Networking
| Hi-index | 35.68 |
We address the frequency offsets and channel gains estimation problem for a multi-input multi-output (MIMO) flat-fading channel using a training sequence. The general case where the frequency offsets are possibly different for each transmit antenna is considered. The Cramer-Rao bound (CRB) for the problem at hand is derived. Additionally, we present a simple, closed-form expression for the large-sample CRB and show that it depends in a simple way on the channel parameters. Next, the parameters estimation issue is investigated. First, the maximum likelihood estimator (MLE), which entails solving an n-dimensional maximization problem where n is the number of transmit antennas, is derived. Then, we show that the likelihood function can be written as the product of n one-dimensional (1-D) functions if a suitable choice of the training sequence is made. Based on this fact, we suggest two computationally simpler methods. Numerical examples that illustrate the performance of the estimators and compare it with the CRB are provided.