Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel
In diversity combining at the receiver, the output signal-to-noise ratio (SNR) is often maximized by using the maximal ratio combining (MRC) provided that the channel is perfectly estimated at the receiver. However, channel estimation is rarely perfect in practice, which results in deteriorating the...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/128195 |
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| author | Mohsen Akbari Mohsen Riahi Manesh Ayman A. El-Saleh Ahmed Wasif Reza |
| author_facet | Mohsen Akbari Mohsen Riahi Manesh Ayman A. El-Saleh Ahmed Wasif Reza |
| author_sort | Mohsen Akbari |
| collection | DOAJ |
| description | In diversity combining at the receiver, the output signal-to-noise ratio (SNR) is often maximized by using the maximal ratio combining (MRC) provided that the channel is perfectly estimated at the receiver. However, channel estimation is rarely perfect in practice, which results in deteriorating the system performance. In this paper, an imperialistic competitive algorithm (ICA) is proposed and compared with two other evolutionary based algorithms, namely, particle swarm optimization (PSO) and genetic algorithm (GA), for diversity combining of signals travelling across the imperfect channels. The proposed algorithm adjusts the combiner weights of the received signal components in such a way that maximizes the SNR and minimizes the bit error rate (BER). The results indicate that the proposed method eliminates the need of channel estimation and can outperform the conventional diversity combining methods. |
| format | Article |
| id | doaj-art-901414f8859a4429b15d417cf11af628 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-901414f8859a4429b15d417cf11af6282025-02-03T07:25:43ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/128195128195Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading ChannelMohsen Akbari0Mohsen Riahi Manesh1Ayman A. El-Saleh2Ahmed Wasif Reza3Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, MalaysiaFaculty of Engineering, Multimedia University, 63100 Cyberjaya, Selangor, MalaysiaDepartment of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, MalaysiaIn diversity combining at the receiver, the output signal-to-noise ratio (SNR) is often maximized by using the maximal ratio combining (MRC) provided that the channel is perfectly estimated at the receiver. However, channel estimation is rarely perfect in practice, which results in deteriorating the system performance. In this paper, an imperialistic competitive algorithm (ICA) is proposed and compared with two other evolutionary based algorithms, namely, particle swarm optimization (PSO) and genetic algorithm (GA), for diversity combining of signals travelling across the imperfect channels. The proposed algorithm adjusts the combiner weights of the received signal components in such a way that maximizes the SNR and minimizes the bit error rate (BER). The results indicate that the proposed method eliminates the need of channel estimation and can outperform the conventional diversity combining methods.http://dx.doi.org/10.1155/2014/128195 |
| spellingShingle | Mohsen Akbari Mohsen Riahi Manesh Ayman A. El-Saleh Ahmed Wasif Reza Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel The Scientific World Journal |
| title | Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel |
| title_full | Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel |
| title_fullStr | Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel |
| title_full_unstemmed | Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel |
| title_short | Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel |
| title_sort | receiver diversity combining using evolutionary algorithms in rayleigh fading channel |
| url | http://dx.doi.org/10.1155/2014/128195 |
| work_keys_str_mv | AT mohsenakbari receiverdiversitycombiningusingevolutionaryalgorithmsinrayleighfadingchannel AT mohsenriahimanesh receiverdiversitycombiningusingevolutionaryalgorithmsinrayleighfadingchannel AT aymanaelsaleh receiverdiversitycombiningusingevolutionaryalgorithmsinrayleighfadingchannel AT ahmedwasifreza receiverdiversitycombiningusingevolutionaryalgorithmsinrayleighfadingchannel |