Pre-equalization with subband channel loading: A technique to maximize throughput in uplink OFDM-CDMA systems

被引：3
作者：
Benvenuto, N [1 ]
Bisaglia, P [1 ]
Tosato, F [1 ]
机构：
[1] Univ Padua, Dept Informat Engn, I-35131 Padua, Italy
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2005年 / 53卷 / 04期
关键词：
channel loading; orthogonal frequency-division multiplexing code-division multiple-access (OFDM-CDMA); preequalization; throughput maximization;
D O I：
10.1109/TCOMM.2005.844933
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter focuses on maximization of achievable throughput for uplink orthogonal frequency-division multiplexing code-division multiple-access (OFDM-CDMA) systems. In particular, a new pre-equalization technique is presented where all users employ spreading both in frequency (on sub-bands of the available spectrum) and time; moreover, bit and power loading is used at the mobile terminals to accomplish throughput maximization. To avoid interference among users, the proposed loading algorithm inherently inverts the channel amplitude on the sub-carriers of each sub-band, while the phase is adjusted separately.
引用
收藏
页码：564 / 568
页数：5
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