OFDM stands for Orthogonal Frequency Division Multiplexing . OFDM is one of the feature of Wimax 802.16d standard developed for fixed wimax.
OFDM is used in point to point connectvity . For two way data transmission OFDM is used with TDD (Time Dicision Duplexing)
OFDMA stands for Orthogonal Frequency Division Multiple Access. OFDMA is point to multipoint version of OFDM . OFDM is multiplexing and OFDMA is multiple access where multiple CPE's can be connected with same base station.
In OFDMA fixed wimax point to multipoint connectivity , uplink transmission ( CPE to base station ) can be OFDM because one CPE can be conneced to one base station only , but in downlink transmission ( Base station to CPE) is OFDMA as one base station is connected to many CPE's.
OFDM is used in point to point connectvity . For two way data transmission OFDM is used with TDD (Time Dicision Duplexing)
OFDMA stands for Orthogonal Frequency Division Multiple Access. OFDMA is point to multipoint version of OFDM . OFDM is multiplexing and OFDMA is multiple access where multiple CPE's can be connected with same base station.
In OFDMA fixed wimax point to multipoint connectivity , uplink transmission ( CPE to base station ) can be OFDM because one CPE can be conneced to one base station only , but in downlink transmission ( Base station to CPE) is OFDMA as one base station is connected to many CPE's.
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