Orthogonal Frequency Division multiplexing (OFDM) systems have become popular recently for providing high data rate multimedia services over severe multipath channels. In such channels, transmission of high data rate signals using conventional single carrier techniques can result in severe intersymbol interference (ISI) and a consequent increase in the equalizer complexity. In such environments, OFDM systems offer low-complexity solutions and several new standards have adopted this technique. In addition to the advantages in suppressing ISI, OFDM systems can offer flexibility in modulation and multiple access. This paper investigates the downlink communications performance of an indoor wireless system where a base station is used to transmit signals to various portable terminals.
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