IN WCDMA(WIDE CODE DIVISION MULTIPLE ACCESS)WHICH ONE
FREQUENCY HOPPING IS USED EITHER FAST FREQUENCY OR SLOW
FREQUENCY HOPPING,SAY IN DETAILS
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Answer Posted / Sachin Srivastava
In Wideband Code Division Multiple Access (WCDMA), both fast frequency hopping and slow frequency hopping are used to combat interference and improve system capacity. However, the specific use of each hopping technique depends on the specific network configuration.nnFast Frequency Hopping (FFH) is utilized for uplink transmissions and takes place at a rate of 512 times per second, which helps minimize inter-symbol interference caused by other users in the same cell. This hopping technique allows the user equipment to switch rapidly between different carrier frequencies within the available frequency band.nnOn the other hand, Slow Frequency Hopping (SFH) is employed for downlink transmissions and occurs at a slower rate of 16 times per second. It helps mitigate inter-cell interference by allowing the base station to change its transmission frequency during each frame, thus reducing the likelihood of interference with neighboring cells.nnIn summary, WCDMA employs both FFH and SFH to optimize network performance, with FFH primarily used for uplink transmissions and SFH used for downlink transmissions.
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