Open AccessMultiuser differential transmission scheme for massive MIMO systems
Author(s) -
Fang Zhaoxi,
Liang Feng,
Li Jun,
Wang Yang
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.1983
Subject(s) - channel state information , transmission (telecommunications) , mimo , telecommunications link , base station , computer science , channel (broadcasting) , antenna (radio) , differential (mechanical device) , bit error rate , block (permutation group theory) , block code , signal to noise ratio (imaging) , antenna array , algorithm , electronic engineering , telecommunications , mathematics , decoding methods , wireless , engineering , geometry , aerospace engineering
Channel estimation is a big challenge in multiuser massive multiple‐input multiple‐output systems. A novel multiuser differential transmission scheme for uplink transmission with a large antenna array at the base station (BS) is proposed. In the proposed scheme, a block‐by‐block differential encoder is employed at each user, while simple symbol‐wise differential decoder is used at the BS to recover the information symbols without any knowledge of the channel state information (CSI). The performance of the proposed scheme when the number of BS antennas grows large is analysed. Both analytical and numerical results show that the proposed differential transmission scheme is able to achieve almost the same bit‐to‐error rate performance as the coherent maximum ratio combining receiver with perfect CSI in the high signal‐to‐noise ratio region.