Compare DS-SS and FH-SS.
August 07, 2023
102. Compare DS-SS and FH-SS.
| DS-SS | FH-SS |
|---|---|
| PN sequence is multiplied with narrow band signal. | Data bits are transmitted in different frequency slots which are changed by PN sequence. |
| Modulation used is BPSK-coherent. | Modulation used is M-ary FSK noncoherent. Faster than DS-SS. |
| Fixed chip rate. | Variable chip rate. |
| Long acquisition time is required. | Short acquisition time. |
| Effect of distance is high. | Effect of distance is less. |
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