Performance study of differential frequency hopping
Single and multi-user performance of the spread-spectrum modulation technique called differential frequency hopping (DFH) and its performance comparison against fast frequency hopping (FFH) multiple-access system are the main focuses of this dissertation, Dl-H and FFI I are compared based o...
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| Format: | Theses and Dissertations |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/54711 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Single and multi-user performance of the spread-spectrum modulation technique called
differential frequency hopping (DFH) and its performance comparison against fast
frequency hopping (FFH) multiple-access system are the main focuses of this
dissertation, Dl-H and FFI I are compared based on the assumption of equal bandwidth.
Under the absence of noise and fading, we study how multi-user interference (MUI)
influences the performance of a multiple access OFH system. The concepts of singleuser
and multi-user efficiency have also been included in the discussion which can be
considered as a reasonable means to compare FFI I and OFII systems. For the same bits
per symbol and same dwell time, it is shown that the data rate of a single-user DFH is
larger than the FFlI data rate. Mostly at low and mid-level SNRs~ Dl-H is more MUItolerant
than the comparable FFH and FFII systems with interference cancellation. |
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