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- W2287881426 abstract "In this paper, a massive MIMO downlink frequency division duplexing (FDD) system over correlated Rayleigh fading channel is considered. It is well known that the length of training sequence not only affects the accuracy of channel estimation but also accounts for the rate loss resulting from training overhead. However, as the number of the base station antennas becomes large, the required length of training sequence cannot increase unlimitedly. Thus, in this work we derive the analytical expression of achievable rate and investigate the impacts of the training sequence length on system asymptotic performance. It is discovered from the analytical results in two-fold that (1) the length of training sequence normalized by the antenna number approaches to zero yet the system capacity is guaranteed to positive infinity as long as the antenna number is large enough; (2) the transmission capability saturates to a certain level if the antenna number grows to very large with any given training length. Simulation results verify the theoretical derivations and demonstrate the performance limit." @default.
- W2287881426 created "2016-06-24" @default.
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- W2287881426 date "2015-09-01" @default.
- W2287881426 modified "2023-09-23" @default.
- W2287881426 title "Effects of the Training Duration in Massive MIMO FDD System over Spatially Correlated Channel" @default.
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- W2287881426 doi "https://doi.org/10.1109/vtcfall.2015.7390910" @default.
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