BER-Optimized Robust Precoder Design for MIMO-OFDM Systems with Insufficient CP

This paper considers a robust precoder design for MIMO-OFDM systems with insufficient cyclic prefix (CP). Interference alignment is utilized to formulate the precoder design problem as a bit error rate (BER) minimization problem subject to a total power constraint. To this end, the precoder is desig...

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Bibliographic Details
Published in:2016 IEEE Global Communications Conference (GLOBECOM) pp. 1 - 6
Main Authors: Akhtar, Javed, Bedi, Amrit S., Rajawat, Ketan, Jagannatham, Aditya K.
Format: Conference Proceeding
Language:English
Published: IEEE 01.12.2016
Subjects:
Bit error rate
Interference
MIMO
OFDM
Receivers
Robustness
Transmitters
Online Access:Get full text
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Summary:This paper considers a robust precoder design for MIMO-OFDM systems with insufficient cyclic prefix (CP). Interference alignment is utilized to formulate the precoder design problem as a bit error rate (BER) minimization problem subject to a total power constraint. To this end, the precoder is designed to be robust to the errors in the available channel estimates, by considering the worst-case BER for optimization. Interestingly, channel estimates at both transmitter and receiver are allowed to be in error. Extensive simulations are carried out to compare the performance of various MIMO-OFDM systems with and without robust precoders.
DOI:10.1109/GLOCOM.2016.7841628