Physical-layer design for next-generation cellular wireless systems

Abstract

rates and throughput using a combination of wider channel bandwidths and increased spectral efficiency. These higher data rates will be required to support new applications such as video unicast and broadcast. Minimizing physical layer latency is also an important requirement, from the point of view of optimizing performance at higher layers (as is well known, Transmission Control Protocol [TCP] performance is adversely affected by large round-trip delays). In this paper, we present several proposals for the physical layer design of a next-generation wireless network, including the air interface design, resource allocation, multiple antenna techniques, duplexing method, and network coordination.While this paper is focused on the physical layer design, we briefly describe the higher layer design to provide context. We envision that the access network of next-generation systems will be based on a

An Information Theoretic View of Distributed Antenna Processing in Cellular Systems

“…MCP schemes are also considered as part of next-generation cellular wireless systems physical-Layer designs in [55]. Figure 1.4: Per-cell sum-rates versus inter-cell interference factor α in Wyner's uplink channel (P = 10dB).…”

An Improved Iterative Water-Filling Algorithm for Multi-Cell Interference Mitigation in Downlink OFDMA Networks

“…Current wireless networks mitigate inter-cell interference by locating co-channel base stations as far apart as possible via frequency reuse planning at the cost of lowering spectral efficiency. However, future network evolutions are envisioned to employ a full (or an aggressive) frequency reuse and proactive inter-cell interference mitigation techniques are required [2]. Recently, base station coordination has emerged as a powerful means to mitigate co-channel inter-cell interference.…”

An Information Theoretic View of Distributed Antenna Processing in Cellular Systems

“…A brief survey for MCP in cellular uplink and downlink channels and related issues, is provided in [54]. MCP schemes are also considered as part of next-generation cellular wireless systems physical-Layer designs in [55].…”