Sliding-exponential window RLS algorithm and its square-root method's DFE for the TDMA digital mobile radio

The complex algorithm of the sliding exponential window recursive least-squares (SEWRLS) algorithm and its square-root method's DFE for a time division multiple access (TDMA) digital cellular system are treated in this paper. First, we derive two complex algorithm structures of the SEWRLS and present its square-root factorization algorithm. Then their applications in fast-varying systems are discussed.