Su, Xinghui, Lv, Tiejun, Gong, Ping, Yun, Xiang and Yang, Shaoshi
Multi-group frequency hopping OFDMA based on statistical multiplexing.
In, 4th IEEE/ACM International Wireless Communications and Mobile Computing Conference (IEEE/ACM IWCMC 2008), Crete, GR,
06 - 08 Aug 2008.
In this paper, the multi-group frequency hopping OFDMA (MG-FH OFDMA) based on the statistical multiplexing is proposed for the downlink cellular system. Compared with the existed random frequency hopping OFDMA (RFH-OFDMA) system utilizing the statistical multiplexing, the proposed MG-FH OFDMA invokes the deterministic hopping pattern to reduce the number of subcarrier collisions. By dividing all users into different groups, the subcarriers are utilized sufficiently. Latin Square hopping pattern and user index updating scheme are applied to randomize the subcarrier collisions among users. The user capacity, defined as the maximum number of users served with a basic data-rate in a cell, is calculated with the consideration of intra-cell capacity and the other cell interference (OCI). Results show that the proposed MG-FH OFDMA achieves higher user capacity than that of the RFH-OFDMA.
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