Accurate Channel Identification with Time-Frequency Interferometry for OFDM
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
BER Performance Evaluation in 2 × 2 MIMO Spatial Multiplexing Systems under Rician Fading Channels
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
IEEE Transactions on Consumer Electronics
Multicarrier modulation for data transmission: an idea whose time has come
IEEE Communications Magazine
Broadband wireless access solutions based on OFDM access in IEEE 802.16
IEEE Communications Magazine
Achievable throughput enhancement based on modified carrier interferometry for MIMO/OFDM
Digital Signal Processing
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Recently time-frequency interferometry (TFI)-OFDM has been proposed as a channel identification scheme. TFI-OFDM system can multiplex the same impulse response in twice on the time domain without overlapping each other. In this case, the required pilot signal is only one. Moreover, by averaging these impulse responses, the accurated channel impulse responses are obtained. However, if the total channel paths are reduced, the performance might be degraded. This is because the channel identification of TFI-OFDM is operated with averaging the selected spectrum signals from the time windows. For the case with reduced channel paths, the selected time spectrum signals include the noise terms. By applying the FFT operation, these noise terms are spread in the frequency domain. In this case, the channel identification is poorly operated due to the noise. To reduce this problem, in the paper, we propose the channel identification method with path selection for performance enhancement of TFI-OFDM.