New transmission scheme
based on space-time code is proposed for massive MIMO system, which consists of K users and a base station. Each user
is equipped with four antennas and two of them are selected to send space-time
codeword with Alamouti coded by using the method of generalized spatial
modulation. The base station estimates the index of transmit antennas used by
each user at first, and then uses an iterative method to separate each space-time codeword and decode
modulated signals of each code-word. Compared with the existing scheme for the
same scene, the proposed scheme reduces the complexity of decoding, while
keeping the same transmission rate. Simulation results demonstrate that the
proposed scheme outperforms the existing scheme in the same scene when the base
station is equipped with large amount of antennas.
Cite this paper
Tian, X. , Jia, W. and Zhang, H. (2017). New Transmission Scheme Based on Space-Time Code for Massive MIMO. Open Access Library Journal, 4, e3712. doi: http://dx.doi.org/10.4236/oalib.1103712.
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