Massive MIMO Performance - TDD Versus FDD: What Do Measurements Say?

Research output: Contribution to journalArticle


title = "Massive MIMO Performance - TDD Versus FDD: What Do Measurements Say?",
abstract = "Downlink beamforming in Massive MIMO either relies on uplink pilot measurements--exploiting reciprocity and time-division duplexing (TDD) operation, or on the use of a predetermined grid of beams with user equipments reporting their preferred beams, mostly in frequency-division duplexing (FDD) operation. Massive MIMO in its originally conceived form uses the first strategy, with uplink pilots, whereas there is currently significant commercial interest in the second, grid-of- beams. It has been analytically shown that with isotropic scattering (independent Rayleigh fading) the first approach outperforms the second. Nevertheless, there remains controversy regarding their relative performance in practical channels. In this contribution, the performances of these two strategies are compared using measured channel data at 2.6 GHz.",
keywords = "channel measurements, FDD, Massive MIMO, performance, TDD",
author = "Jose Flordelis and Fredrik Rusek and Fredrik Tufvesson and Larsson, {Erik G.} and Ove Edfors",
year = "2018",
month = apr,
doi = "10.1109/TWC.2018.2790912",
language = "English",
volume = "17",
pages = "2247--2261",
journal = "IEEE Transactions on Wireless Communications",
issn = "1536-1276",
publisher = "IEEE - Institute of Electrical and Electronics Engineers Inc.",
number = "4",