Dynamic Feedback Allocation Algorithms for Interference Management in MIMO Uplink
作者： Harish Ganapathy , Constantine Caramanis
DOI: 10.1109/GLOCOM.2010.5683624
关键词:
摘要: This paper investigates the impact of limited feedback on uplink a wireless network with multiple access points. The adopts universal frequency re-use each point serving set users using orthogonal signalling. All nodes are multiple-input-multiple-output-capable. Block Diagonalization, popular technique for interference cancellation, is performed at transmitter. Interference cancellation cell boundary being considered in future standards such as IEEE 802.16m and 3GPP Long Term Evolution Advanced. In systems, precoder fed back to mobile by its home base station. It follows that rate achieved well neighbouring points function bandwidth this channel. We study problem minimizing network-wide budget subject guaranteeing minimum point. compute optimal allocation dynamic programming junction trees complexity depends structure underlying graph. Unfortunately, when graph forms grid traditional arrangement stations, becomes exponential number users, N. propose greedy algorithm significantly-reduced an approximation guarantee that, provably, scales constant proportionality shown be quantizer distortion, cost per bit (for reliable delivery) size largest neighbourhood network.
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