لماذا تستخدم شبكة LTE تقنية OFDMA في الوصلة الهابطة بينما تستخدم SC-FDMA في الوصلة الصاعدة ؟
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 ... الإطلاع على المزيد
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 ... الإطلاع على المزيد