CNN based multiuser detection and equalization in wireless communication systems

In this paper novel CNN based multiuser detection algorithms are proposed which can provide high performance mobile communication. Multiuser detection in CDMA system come down to quadratic optimization. CNNs are capable of fast quadratic optimization when the quadratic form arising from the detection problem is generated by a sparse matrix. Since multiuser communication under heavy loaded scenarios does not result in a sparse matrix, novel methods, such as (i) coding, (ii) truncation and (iii) equalization is developed to make real-time CNN detection possible. In this way, near-optimal communication can be obtained which supports high speed data services over mobile networks.