Field Trial Results on Different Uplink Coordinated Multi-Point (CoMP) Concepts in Cellular Systems

Coordinated multi-point (CoMP) in the cellular uplink appears to be an effective option to combat inter-cell interference, offering large improvements in spectral efficiency and fairness. However, one major drawback of these schemes is that they typically require a large extent of additional backhaul infrastructure compared to a non-cooperative system. A large amount of theoretical work has been published on this topic, emphasizing the benefit of adapting between different CoMP strategies depending on the channel realization in order to optimize the rate/backhaul trade-off. This paper complements previous publications through field trial results obtained in a representative urban setup. The results yield an insight into practical issues connected to some schemes, while being fairly correlated to theoretical predictions and in fact further emphasizing the gain of adaptive CoMP

[1]  Gerhard Fettweis,et al.  Application driven joint uplink-downlink optimization in wireless communications , 2010, 2010 International ITG Workshop on Smart Antennas (WSA).

[2]  Tobias Weber,et al.  Pilots for joint channel estimation in multi-user OFDM mobile radio systems , 2002, IEEE Seventh International Symposium on Spread Spectrum Techniques and Applications,.

[3]  Gerhard Fettweis,et al.  On Uplink Network MIMO under a Constrained Backhaul and Imperfect Channel Knowledge , 2009, 2009 IEEE International Conference on Communications.

[4]  Gerhard Fettweis,et al.  Multisite field trial for LTE and advanced concepts , 2009, IEEE Communications Magazine.

[5]  G. Fettweis,et al.  A Framework for Determining Realistic Capacity Bounds for Distributed Antenna Systems , 2006, 2006 IEEE Information Theory Workshop - ITW '06 Chengdu.

[6]  Volker Jungnickel,et al.  Multiple CFOs in OFDM-SDMA Uplink: Interference Analysis and Compensation , 2009, EURASIP J. Wirel. Commun. Netw..

[7]  V. Jungnickel,et al.  Synchronization of cooperative base stations , 2008, 2008 IEEE International Symposium on Wireless Communication Systems.

[8]  Gerhard Fettweis,et al.  On Downlink Network MIMO under a Constrained Backhaul and Imperfect Channel Knowledge , 2009, GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference.

[9]  Gerhard Fettweis,et al.  Field trial results for a coordinated multi-point (CoMP) uplink in cellular systems , 2010, 2010 International ITG Workshop on Smart Antennas (WSA).

[10]  Sivarama Venkatesan,et al.  Coordinating Base Stations for Greater Uplink Spectral Efficiency in a Cellular Network , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[11]  Sailes K. Sengijpta.  Fundamentals of Statistical Signal Processing: Estimation Theory , 1995 .

[12]  Gerhard Fettweis,et al.  Rate Region of the Multi-Cell Multiple Access Channel under Backhaul and Latency Constraints , 2008, 2008 IEEE Wireless Communications and Networking Conference.

[13]  R.A. Shafik,et al.  On the error vector magnitude as a performance metric and comparative analysis , 2006, 2006 International Conference on Emerging Technologies.

[14]  Gerhard Fettweis,et al.  A Framework for Optimizing the Uplink Performance of Distributed Antenna Systems under a Constrained Backhaul , 2007, 2007 IEEE International Conference on Communications.

[15]  R RajeshChundu,et al.  Mobile broadband backhaul: Addressing the challenge , 2008 .

[16]  Patrick Marsch,et al.  Coordinated Multi-Point under a Constrained Backhaul and Imperfect Channel Knowledge , 2010 .

[17]  Gerhard Fettweis,et al.  Uplink CoMP under a Constrained Backhaul and Imperfect Channel Knowledge , 2010, IEEE Transactions on Wireless Communications.