Abstract:
Interference mitigation between macro-cell and femto-cells are studied in this paper. Via demonstrating the communications between various transmitter-receiver pairs on d...Show MoreMetadata
Abstract:
Interference mitigation between macro-cell and femto-cells are studied in this paper. Via demonstrating the communications between various transmitter-receiver pairs on different spatial channels could be insulated via proper channel de-correlation at receivers, we propose to separate the transmissions of macro-cell and of femto-cell in spatial domain. Induced challenges such as spatial channel estimation and codeword-to channel mappings are investigated, and we further adopt the Gibbs sampler to achieve co-channel selection of femto-cells. The proposed solutions can be realized without macro-femto coordinations and additional feedback, and are demonstrated aligned with current 3GPP LTE standardization status. We evaluate the proposed schemes by sophisticated simulations based on the dual-strip model in 3GPP femto-cell evaluation scenarios. It has been shown the SINR of users attached to macro-cell can be improved 60 dB while the SINR of users attached to femto-cells can be maintained about 10 dB. Both the significant performance improvements and backward compatibility implies the proposed scheme is valuable and could be contributed to 3GPP instantly.
Date of Conference: 15-18 May 2011
Date Added to IEEE Xplore: 18 July 2011
ISBN Information: