CHANNEL ESTIMATION ERROR COMPENSATION IN TIME-REVERSED UWB COMMUNICATION SYSTEMS

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ALIZADEH S.; KHALEGHI BIZAKI H.; OKHOVVAT M.

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Journal: Advanced Defense Science and Technology Year:2011 | Volume:2 | Issue:3 (5) Page(s): 179-191

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Information Journal Paper

Title

CHANNEL ESTIMATION ERROR COMPENSATION IN TIME-REVERSED UWB COMMUNICATION SYSTEMS

Author(s)

ALIZADEH S. | KHALEGHI BIZAKI H. | OKHOVVAT M. | Issue Writer Certificate

Keywords

TIR TECHNIQUEQ3

UWB SYSTEMSQ3

ESTIMATION ERROR COVARIANCEQ3

PRE-FILTERQ3

OPTIMAL MMSE ESTIMATORQ3

Abstract

Time Reversal (TiR) technique mitigates the complexity of receiver in UWB indoor channels, but is very sensitive to the channel estimation error. The effect of channel imperfection on TIR TECHNIQUE is considered in this paper. At first, the Bit Error Probability (BEP) of the TiR-UWB communication system under the assumptions of the simple Matched Filter (MF) receiver with the channel estimation errors is derived in closed-form. Moreover, based on OPTIMAL MMSE ESTIMATOR receiver, a PRE-FILTER is calculated in closed-form to improve the performance of the TiR-UWB system in an imperfect CSI scenario. Furthermore, a two stage iteration-based algorithm is developed at transmitter to calculate a PRE-FILTER in MF receiver. This improved algorithm causes the channel estimation error tends to zero in some steps for the TiR-UWB system with MF. The initial value for this iteration-based improved algorithm is considered to be closed form PRE-FILTER calculated in TiR-UWB system with OPTIMAL MMSE ESTIMATOR. Finally, exhaustive simulations are done to demonstrate the performance advantage attained by the improved algorithm.

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APA: Copy

ALIZADEH, S., KHALEGHI BIZAKI, H., & OKHOVVAT, M.. (2011). CHANNEL ESTIMATION ERROR COMPENSATION IN TIME-REVERSED UWB COMMUNICATION SYSTEMS. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, 2(3 (5)), 179-191. SID. https://sid.ir/paper/167295/en

Vancouver: Copy

ALIZADEH S., KHALEGHI BIZAKI H., OKHOVVAT M.. CHANNEL ESTIMATION ERROR COMPENSATION IN TIME-REVERSED UWB COMMUNICATION SYSTEMS. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY[Internet]. 2011;2(3 (5)):179-191. Available from: https://sid.ir/paper/167295/en

IEEE: Copy

S. ALIZADEH, H. KHALEGHI BIZAKI, and M. OKHOVVAT, “CHANNEL ESTIMATION ERROR COMPENSATION IN TIME-REVERSED UWB COMMUNICATION SYSTEMS,” (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, vol. 2, no. 3 (5), pp. 179–191, 2011, [Online]. Available: https://sid.ir/paper/167295/en

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