Adaptive equalization and interference cancellation for wireless communication systems

1999 ◽  
Vol 47 (4) ◽  
pp. 538-545 ◽  
Author(s):  
Ben Chi Wah Lo ◽  
K.B. Letaief
Keyword(s):  
Wireless Communication ◽  
Interference Cancellation ◽  
Communication Systems ◽  
Adaptive Equalization ◽  
Wireless Communication Systems

Indoor Multipath Interference Cancellation Using MMSE-CMA Estimator with 2.45 GHz of MIMO Channel Measurement

2015 ◽  
Vol 781 ◽  
pp. 89-92 ◽  
Author(s):  
Atikom Suppayasarn ◽  
Sarun Duangsuwan ◽  
Sathaporn Promwong
Keyword(s):  
Wireless Communication ◽  
Time Domain ◽  
Interference Cancellation ◽  
Communication Systems ◽  
Mimo Channel ◽  
Wireless Communication Systems ◽  
Multipath Interference ◽  
Channel Characterization ◽  
The Time Domain ◽  
Number Of Iterations

This paper studies an indoor multipath interference cancellation using the MMSE-CMA estimator for the unlicensed at 2.45 GHz of wireless communication systems. The proposed of the MMSE-CMA estimator can mitigate a superposition of the multipath interference at the receiver. As the result, the magnitudes of the channel characterization in the time domain are shown between the measured and estimated channel as a difference of number of iterations. Furthermore, we also confirm the multipath interference cancellation with the eye diagrams.

scholarly journals Dual Feeding Antenna for Performance Enhancement of Next-Generation of Mobile Networks against Self–Interference

2020 ◽  
Vol 9 (6) ◽  
pp. 140-147
Keyword(s):  
Wireless Communication ◽  
Mobile Networks ◽  
Interference Cancellation ◽  
Communication Systems ◽  
Single Channel ◽  
Full Duplex ◽  
Wireless Communication Systems ◽  
Next Generation ◽  
International Telecommunication Union ◽  
Resonance Frequencies

Actually, the interference phenomena appear in all current wireless communication systems. Generally, conventional wireless communication systems use two separate channels; one of them for transmitting and the other one for receiving. Achieving single channel full duplex (FD) represents one of the key challenges for the implementation of 5G. Single channel FD permits the capability of wireless communication system to transmit and get concurrently on the identical channel, as well as the assurance of an efficient utilization of the current spectrum. With this newest technology, another sort of interference, which is called self–interference, will be generated. Therefore, self–interference cancellation strategies have an awesome solution for the development of the next generation. Passive and active cancellation techniques can be used to remedy such type of interference. In this regard, a dual feeding antenna approach is regarded as passive cancellation. This paper is concerned with this type of self-interference cancellation. A patch antenna is simulated and tested for two resonance frequencies; 2.45 and 28 GHz. Both of these frequencies are frequency channel candidates proposed by international telecommunication union (ITU) for the fifth generation of mobile networks.

Circular and Dual Polarized Antenna for Self-Interference Cancellation in the Next Generation of Mobile Communication Networks

2021 ◽  
Vol 20 ◽  
pp. 18-27
Author(s):  
Mohamed B. El-Mashade ◽  
Ehab Α. Hegazy
Keyword(s):  
Wireless Communication ◽  
Interference Cancellation ◽  
Communication Systems ◽  
Single Channel ◽  
Full Duplex ◽  
Wireless Communication Systems ◽  
Next Generation ◽  
Fifth Generation ◽  
Resonance Frequencies ◽  
Dual Polarized

The interference phenomena is actually appeared in all current wireless communication systems. This problem has different forms and impacts the performance of any wireless system. At the present time, a new technology, that is called fifth generation (5G), of mobile communications knocks the doors to be commercial within few days. Conventional wireless communication systems use two separate channels, one channel to transmit and another to receive. Achieving single channel full duplex (FD) is one of the key challenges for 5G implementation. Single channel FD provides the capability of sending and receiving concurrently over the same channel, along with assuring efficient utilization of the available spectrum. With this newest technology, another sort of interference will be generated which is called self–interference (SI). SI cancellation techniques represent an awesome solution for the development of next generation. These techniques have two types: passive and active cancellation. Antenna cancellation approach can be characterized as a passive cancellation. In our proposed work, antenna with two feedings is employed as a cancellation procedure. A patch antenna is simulated and tested for two resonance frequencies, 2.45GHz and 28.0GHz. Both frequencies are candidates of frequency channel proposed by ITU for the fifth generation of mobile networks. Finally, the complete design and simulation of dual polarized, with series-fed 3 by 3 patch array on 3.3GHz, is provided.

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