# Anywhere Decoding: Low-Overhead Uplink Interference Management for Wireless Networks

## TL;DR

This paper introduces anywhere decoding, a low-overhead uplink interference management scheme for wireless networks that significantly improves cell-edge user performance with minimal inter-base station communication.

## Contribution

The paper proposes a novel anywhere decoding scheme that reduces backhaul requirements while maintaining near-cooperative performance in uplink interference management.

## Key findings

- Significant outage probability improvements for cell-edge users.
- Achieves full spatial diversity with multiple decoding opportunities.
- Operates within 1.5 dB of full cooperation in high-SNR regimes.

## Abstract

Inter-cell interference (ICI) is one of the major performance-limiting factors in the context of modern cellular systems. To tackle ICI, coordinated multi-point (CoMP) schemes have been proposed as a key technology for next-generation mobile communication systems. Although CoMP schemes offer promising theoretical gains, their performance could degrade significantly because of practical issues such as limited backhaul. To address this issue, we explore a novel uplink interference management scheme called anywhere decoding, which requires exchanging just a few bits of information per coding interval among the base stations (BSs). In spite of the low overhead of anywhere decoding, we observe considerable gains in the outage probability performance of cell-edge users, compared to no cooperation between BSs. Additionally, asymptotic results of the outage probability for high-SNR regimes demonstrate that anywhere decoding schemes achieve full spatial diversity through multiple decoding opportunities, and they are within 1.5 dB of full cooperation.