Near-instantaneously adaptive cooperative uplink schemes based on space-time block codes and v-blast

被引:5
作者
El-Hajjar, Mohammed [1 ]
Zummo, Salam [2 ]
Hanzo, Lajos [1 ]
机构
[1] Univ Southampton, Sch Elect & Comp Engn, Southampton SO17 1BJ, Hants, England
[2] King Fahd Univ Petr & Met, Dept Elect Engn, Dhahran, Saudi Arabia
来源
2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2007年
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1109/VETECS.2007.454
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
In this paper we propose two adaptive schemes for improving the achievable Bandwidth Efficiency (BE) of cooperative diversity aided wireless networks. These schemes are capable of accommodating the channel signal-to-noise ratio (SNR) variation of wireless systems by near-instantaneously adapting the uplink transmission configuration. Explicitly, the first adaptive transmission scheme is constituted by a novel reconfigurable four-antenna-aided cooperative uplink space-time block coded (STBC) structure designed for communicating with a Base Station (BS) equipped with a single receive antenna. By contrast, the second adaptive scheme is constituted by a reconfigurable cooperative uplink vertical Bell Labs Layered Space Time (V-BLAST)-like architecture constituted by single-antenna-aided mobiles communicating with a BS equipped with multiple receive antennas. Our results demonstrate that significant effective BE improvements can be achieved by both systems, while maintaining a target bit-error-ratio of 10(-3). Explicitly, when neglecting the Nyquist excess bandwidth, the first system is capable of attaining an effective BE varying between 0.316 bits/sec/Hz and 2.18 bits/see/Hz, while the second has a BE varying between 2 bits/see/Hz and 8 bits/see/Hz.
引用
收藏
页码:2200 / +
页数:2
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