Performance study of digital communication systems in TWDP fading
In a long-distance wireless-channel transmission, the amplitude, frequency and phase of signals would change randomly. In order to analyze and predict received signals, we need to analyze fading channels that signals go through. Basically, it is assumed that the traditional fading models follow Rayl...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2016
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| Online Access: | http://hdl.handle.net/10356/66434 |
| _version_ | 1811684276268171264 |
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| author | Zhang, Songze |
| author2 | Li Kwok Hung |
| author_facet | Li Kwok Hung Zhang, Songze |
| author_sort | Zhang, Songze |
| collection | NTU |
| description | In a long-distance wireless-channel transmission, the amplitude, frequency and phase of signals would change randomly. In order to analyze and predict received signals, we need to analyze fading channels that signals go through. Basically, it is assumed that the traditional fading models follow Rayleigh distribution, Rician distribution or Nakagami-w distribution. However, we find that in some cases the real fading sometimes is worse than traditional fading. Thus, Durgin has discovered a new analytical fading distribution called two-wave with diffuse power (TWDP) fading to describe this type of small-scale fading.
Based on this new fading model, we analyze its performance with different modulation schemes, such as binary phase signal keying (BPSK), differential phase signal keying (DPSK) and binary frequency signal keying (BFSK). Moreover, diversity combining techniques are used to reduce the effects of multipath fading at receivers. The objective of these techniques is to improve the signal-to-noise ratio (SNR) of the received signal, making better system performance. Some of the traditional diversity-combining techniques are maximal-ratio combining (MRC), equal-gain combining (EGC), selection combining (SC), and switched combining. We would discuss the performance with these diversity combining techniques.
In general, we investigate essential properties and BER performance of this new
fading model. |
| first_indexed | 2024-10-01T04:26:03Z |
| format | Thesis |
| id | ntu-10356/66434 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:26:03Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/664342023-07-04T15:03:36Z Performance study of digital communication systems in TWDP fading Zhang, Songze Li Kwok Hung School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering In a long-distance wireless-channel transmission, the amplitude, frequency and phase of signals would change randomly. In order to analyze and predict received signals, we need to analyze fading channels that signals go through. Basically, it is assumed that the traditional fading models follow Rayleigh distribution, Rician distribution or Nakagami-w distribution. However, we find that in some cases the real fading sometimes is worse than traditional fading. Thus, Durgin has discovered a new analytical fading distribution called two-wave with diffuse power (TWDP) fading to describe this type of small-scale fading. Based on this new fading model, we analyze its performance with different modulation schemes, such as binary phase signal keying (BPSK), differential phase signal keying (DPSK) and binary frequency signal keying (BFSK). Moreover, diversity combining techniques are used to reduce the effects of multipath fading at receivers. The objective of these techniques is to improve the signal-to-noise ratio (SNR) of the received signal, making better system performance. Some of the traditional diversity-combining techniques are maximal-ratio combining (MRC), equal-gain combining (EGC), selection combining (SC), and switched combining. We would discuss the performance with these diversity combining techniques. In general, we investigate essential properties and BER performance of this new fading model. Master of Science (Communications Engineering) 2016-04-05T08:10:23Z 2016-04-05T08:10:23Z 2016 Thesis http://hdl.handle.net/10356/66434 en 84 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Zhang, Songze Performance study of digital communication systems in TWDP fading |
| title | Performance study of digital communication systems in TWDP fading |
| title_full | Performance study of digital communication systems in TWDP fading |
| title_fullStr | Performance study of digital communication systems in TWDP fading |
| title_full_unstemmed | Performance study of digital communication systems in TWDP fading |
| title_short | Performance study of digital communication systems in TWDP fading |
| title_sort | performance study of digital communication systems in twdp fading |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | http://hdl.handle.net/10356/66434 |
| work_keys_str_mv | AT zhangsongze performancestudyofdigitalcommunicationsystemsintwdpfading |