Reduced Overhead Feedback Scheme For Interference Mitigation In Cellular Networks

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The Problem:

The continuing increase in data transportation presents a major technological challenge to the wireless communications industry due to the shortage in the electromagnetic spectrum; a precious natural resource which is very limited. The scarcity of available spectrum has pushed cellular networks to universal frequency reuse (every cell utilizes all of the frequencies), that in turn leads to high mutual interference between adjacent cells. This is the major factor in limiting network throughput, especially to cell edge users. Coordinated Multi-Point (CoMP) transmission is a key in breaking the spectrum gridlock by keeping interference at an adequate level and protecting cell-edge users…

The Solution:

This novel invention proposes a practical channel feedback scheme which enables interference mitigation and coordination in cellular networks, with less channel quantization bits.

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