Analyzing the reduced required BS density due to CoMP in cellular networks

In this paper we investigate the benefit of base station (BS) cooperation in the uplink of coordinated multi-point (CoMP) networks. Our figure of merit is the required BS density required to meet a chosen rate coverage. Our model assumes a 2-D network of BSs on a regular hexagonal lattice in which path loss, lognormal shadowing and Rayleigh fading affect the signal received from users. Accurate closed-form expressions are first presented for the sum-rate coverage probability and ergodic sum-rate at each point of the cooperation region. Then, for a chosen quality of user rate, the required density of BS is derived based on the minimum value of rate coverage probability in the cooperation region. The approach guarantees that the achievable rate in the entire coverage region is above a target rate with chosen probability. The formulation allows comparison between different orders of BS cooperation, quantifying the reduced required BS density from higher orders of cooperation.

[1]  Chenyang Yang,et al.  Coordinated multi-point transmission with non-ideal channel reciprocity , 2012, 2012 IEEE Wireless Communications and Networking Conference (WCNC).

[2]  Raviraj S. Adve,et al.  Required Base Station Density in Coordinated Multi-Point Uplink with Rate Constraints , 2013, ArXiv.

[3]  Yong Zhang,et al.  Cross-Layer Adaptation with Coordinated Scheduling for Heterogeneous Wireless Networks , 2010, 2010 IEEE 72nd Vehicular Technology Conference - Fall.

[4]  Satoshi Konishi,et al.  A study on homogeneous- and heterogeneous-based additional network deployments with application of coordinated multi-point operation , 2012, 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC).

[5]  Fortunato Santucci,et al.  Generalized moment matching for the linear combination of lognormal RVs: application to outage analysis in wireless systems , 2006, IEEE Transactions on Wireless Communications.

[6]  A. Ibrahim,et al.  Coordinated Multi-Point algorithms in Pico based Heterogeneous Networks , 2012, 2012 14th International Conference on Advanced Communication Technology (ICACT).

[7]  Reinaldo A. Valenzuela,et al.  Network coordination for spectrally efficient communications in cellular systems , 2006, IEEE Wireless Communications.

[8]  Abbas Jamalipour,et al.  Wireless communications , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[9]  Moon Ho Lee,et al.  Zero-forcing beamforming with block diagonalization scheme for Coordinated Multi-Point transmission , 2012, 2012 18th Asia-Pacific Conference on Communications (APCC).

[10]  Thorsten Wild.  Comparing Downlink Coordinated Multi-Point Schemes with Imperfect Channel Knowledge , 2011, 2011 IEEE Vehicular Technology Conference (VTC Fall).

[11]  Lan Chen,et al.  Coordinated Scheduling Based on Overload Indicator for LTE/LTE-A Uplink , 2010, 2010 IEEE 72nd Vehicular Technology Conference - Fall.

[12]  Laetitia Falconetti,et al.  Uplink coordinated multi-point reception in LTE heterogeneous networks , 2011, 2011 8th International Symposium on Wireless Communication Systems.

[13]  Dacheng Yang,et al.  Antenna mismatch and calibration problem in coordinated multi-point transmission system , 2012, IET Commun..

[14]  Tommy Svensson,et al.  Performance evaluation of coordinated multi-point transmission schemes with predicted CSI , 2012, 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC).

[15]  Josef A. Nossek,et al.  Linear transmit processing in MIMO communications systems , 2005, IEEE Transactions on Signal Processing.

[16]  Bhaskar D. Rao,et al.  An Analytically Tractable Approximation for the Gaussian Q-Function , 2008, IEEE Communications Letters.

[17]  Andreas F. Molisch,et al.  Asynchronous interference mitigation in cooperative base station systems , 2008, IEEE Transactions on Wireless Communications.

[18]  Iain B. Collings,et al.  Point-Wise Sum Capacity Maximization in LTE-A Coordinated Multi-Point Downlink , 2013, 2013 IEEE 77th Vehicular Technology Conference (VTC Spring).