3G Evolution, Second Edition: HSPA and LTE for Mobile Broadband
3G Evolution, Second Edition: HSPA and LTE for Mobile Broadband
Pilot contamination problem in multi-cell TDD systems
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Adapting a downlink array from uplink measurements
IEEE Transactions on Signal Processing
Network coordination for spectrally efficient communications in cellular systems
IEEE Wireless Communications
Capacity of a mobile multiple-antenna communication link in Rayleigh flat fading
IEEE Transactions on Information Theory
On the achievable throughput of a multiantenna Gaussian broadcast channel
IEEE Transactions on Information Theory
Sum capacity of the vector Gaussian broadcast channel and uplink-downlink duality
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Duality, achievable rates, and sum-rate capacity of Gaussian MIMO broadcast channels
IEEE Transactions on Information Theory
Impact of incomplete CSI on energy efficiency for multi-cell OFDMA wireless uplink
EUNICE'11 Proceedings of the 17th international conference on Energy-aware communications
Argos: practical many-antenna base stations
Proceedings of the 18th annual international conference on Mobile computing and networking
Practical performance of MU-MIMO precoding in many-antenna base stations
Proceeding of the 2013 workshop on Cellular networks: operations, challenges, and future design
USC SDR, an easy-to-program, high data rate, real time software radio platform
Proceedings of the second workshop on Software radio implementation forum
ArgosV2: a flexible many-antenna research platform
Proceedings of the 19th annual international conference on Mobile computing & networking
Review: Enabling Green cellular networks: A survey and outlook
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AirSync: enabling distributed multiuser MIMO with full spatial multiplexing
IEEE/ACM Transactions on Networking (TON)
Transmission Scheme for 2D Antenna Array MIMO Systems with Limited Feedback
Wireless Personal Communications: An International Journal
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A cellular base station serves a multiplicity of single-antenna terminals over the same time-frequency interval. Time-division duplex operation combined with reverse-link pilots enables the base station to estimate the reciprocal forward- and reverse-link channels. The conjugate-transpose of the channel estimates are used as a linear precoder and combiner respectively on the forward and reverse links. Propagation, unknown to both terminals and base station, comprises fast fading, log-normal shadow fading, and geometric attenuation. In the limit of an infinite number of antennas a complete multi-cellular analysis, which accounts for inter-cellular interference and the overhead and errors associated with channel-state information, yields a number of mathematically exact conclusions and points to a desirable direction towards which cellular wireless could evolve. In particular the effects of uncorrelated noise and fast fading vanish, throughput and the number of terminals are independent of the size of the cells, spectral efficiency is independent of bandwidth, and the required transmitted energy per bit vanishes. The only remaining impairment is inter-cellular interference caused by re-use of the pilot sequences in other cells (pilot contamination) which does not vanish with unlimited number of antennas.