| dc.creator |
Chuwa, Maria G |
|
| dc.date |
2019-08-30T09:46:47Z |
|
| dc.date |
2019-08-30T09:46:47Z |
|
| dc.date |
2012 |
|
| dc.date.accessioned |
2022-10-20T13:46:56Z |
|
| dc.date.available |
2022-10-20T13:46:56Z |
|
| dc.identifier |
Chuwa, M.G. (2012). Assessment of the suitable modulation scheme for broadband power line communication system. Dodoma: The University of Dodoma |
|
| dc.identifier |
http://hdl.handle.net/20.500.12661/1313 |
|
| dc.identifier.uri |
http://hdl.handle.net/20.500.12661/1313 |
|
| dc.description |
Dissertation (MSc Telecommunications Engineering) |
|
| dc.description |
In Power line communication the information are sent via electrical power lines. The
power lines are characterized by multipath fading and frequency selectivity due to
impedance mismatch of the channel and impulsive noise. Therefore there should be a way
to increase performance of the system. In this dissertation OFDM and MCSS modulation
techniques were used to enhance PLC system performance.
Bit Error Rate (BER) performance of OFDM and MCSS was analyzed and system
efficiency was enhanced by the application of coding techniques. The performance of
these modulation techniques were also analyzed with different loads’ impedances. The
performance of the system was assessed by the commonly used Bit Error Rate against
Signal to Noise Ratio (SNR) diagrams and the comparison of OFDM and MCSS systems
was assessed by using the frequency response obtained from the PLC multipath channel
model for different number of paths.
For both coded and uncoded systems it was observed that at low load impedances the
performance of MCSS was much better at higher signal to noise ratio than that of OFDM
by a gain of 4dB. But at lower SNR OFDM had a better BER performance compared to
MCSS. Additionally in the case of high load impedances the performance of OFDM was
better than that of MCSS for systems with a gain of 12dB. |
|
| dc.language |
en |
|
| dc.publisher |
The University of Dodoma |
|
| dc.subject |
Broadband power line |
|
| dc.subject |
Communication system |
|
| dc.subject |
Modulation scheme |
|
| dc.subject |
MCSS |
|
| dc.subject |
MCSS modulation techniques |
|
| dc.subject |
OFDM |
|
| dc.subject |
OFDM modulation technique |
|
| dc.subject |
Power line communication |
|
| dc.subject |
Multicarrier Spread Spectrum |
|
| dc.title |
Assessment of the suitable modulation scheme for broadband power line communication system |
|
| dc.type |
Dissertation |
|