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لماذا تستخدم شبكة LTE تقنية OFDMA في الوصلة الهابطة بينما تستخدم SC-FDMA في الوصلة الصاعدة ؟
In simple terms OFDMA requires more power for transmission whereas SC-FDMA requires lesser power.. and since higher power can't be processed using UE (mostly mobile ... See More
LTE use ofdma in DL for more data rate and more application .Base station can increase the power and have awideband power amplifier .LTE in UL use S-CFDMA to overcome the ... See More
It's to do with Peak to Average Power Ratio (PAPR). OFDMA has higher PAPR than SC-FDMA therefore it is used in the downlink (from base station to mobile station). Th ... See More
4G technology uses OFDMA in DL because of the reason that data rate can be very high. OFDMA supports high data rate due to data transmission in parellel sub-carrier bands ... See More
It is because of PAPR , because of PAPR and limitation of handset for providing power the SC-FDMA is more suitable for uplink. BR//