New high-rate wireless LAN standards
IEEE Communications Magazine
Broadband wireless access solutions based on OFDM access in IEEE 802.16
IEEE Communications Magazine
A comparison of the HIPERLAN/2 and IEEE 802.11a wireless LAN standards
IEEE Communications Magazine
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This paper deals with a simple way of reducing the multiple access interference (MAI) introduced by symbol timing misalignment in an OFDMA uplink system. To alleviate the MAI, we provide a new OFDMA transmitter equipping with a simple symbol repetition coupled with a cyclic time shift. It is found that this scheme can provide the MAI-robust reception without decreasing the bandwidth efficiency when the system is fully loaded.