Near-Instantaneously Adaptive Cooperative Uplink Schemes Based on Space-Time Block Codes and V-Blast

- 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 fourantenna-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...

• Type: Conference
• Year: 2007
• Where: VTC
• Authors: Mohammed El-Hajjar, Salam A. Zummo, Lajos Hanzo
• Keywords: Adaptive Scheme, Cooperative Uplink, Effective Be, VTC 2007