Turbo-reception method and turbo-receiver

Details Turbo-reception method and turbo-receiver Turbo-reception method and turbo-receiver

2006-04-11

2006-04-11

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C714S786000

Reexamination Certificate

active

07027533

ABSTRACT:
An impluse response hmn(q) of each transmission path is estimated from N received signals rm(m=1, . . . , M) and a known signal (for a number of users equal to N, n=1, . . . , N). M×N matrix H (q) having hmn(q) as an element and a Q×Q matrix H having H(q) as an element are determined (where Q represents a number of multipaths of each transmitted wave and q=0, . . . , Q−1). A soft decision value b′n(k) is determined from decoded λ2[bn(k)], and this is used to generate an interference component matrix B′(k) to generate an interference replica H·B′(k). The interference replica H·B′(k) is subtracted from a received matrix y(k) to determine y′(k). y(k) and H are used to determine an adaptive filter coefficient wn(k) to be applied to an n-th user in order to eliminate residual interference components in y′(k) according to the minimum mean square error criteria. y(k) is passed through wn(k) to provide a log-likelihood ratio as a received signal from the user n from which interferences are eliminated.

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