NTT DoCoMo Plans 4G Field Trial

NTT DoCoMo is planning to launch a trial 4G mobile network at its R&D facilities in Yokosuka, Kanagawa Prefecture, Japan. The field trial will employ Variable Spreading Factor Orthogonal Frequency and Code Division Multiplexing (VSF-OFCDM) and Variable Spreading Factor Code Division Multiple Access (VSF-CDMA) technologies. VSF-OFCDM enables downlink connections of extremely high speeds, both indoors and outdoors, while VSF-CDMA realizes high-speed, high-efficiency packet transmissions for the uplink. DoCoMo has previously demonstrated 4G performance rates of 100 Mbps for the downlink and 20 Mbps for the uplink.
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