Breadth-first maximum likelihood detection in multiuser CDMA
Lars Kildehoj Rasmussen, Teng Joon Lim, Tor Aulin · IEEE Transactions on Communications · 1997
In this letter, we derive a recursive, additive metric for complexity-constrained maximum likelihood detection for multiuser CDMA using breadth-first detection algorithms. The metric requires linear filtering of the matched-filtered received signal vector. It is shown that a class of filters fulfilling certain requirements lead to identical performance.