Generalized chip-interleaved CDMA with multi-rate/multi-connection using 2-dimensional OVSF spreading
نویسندگان
چکیده
Abstract The multiple-access interference (MAI) limits the transmission performance of the CDMA uplink transmission. In this paper, we propose a generalized chip-interleaved (GCI)-CDMA with 2-dimensional (2D)-OVSF spreading. Since MAI can be removed, single-user frequency-domain equalization based on the MMSE criterion can be applied for signal detection. The GCI-CDMA allows flexible multi-rate/multi-connection data transmission using either DSor MC-CDMA. The transmission performance in a timeand frequency-selective fading multiuser environment is evaluated by computer simulation. Keyword CDMA, multi-rate, uplink transmission, interleaving, 2-dimensional-OVSF spreading.
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