Receiver comprising at least two receive branches

Details Receiver comprising at least two receive branches Receiver comprising at least two receive branches

H - Electricity

04

B

H04B 1/18 (2006.01) H04L 1/06 (2006.01)

Patent

CA 2057187

The invention relates to a receiver (5a, 5b, 10) comprising at least two receive branches (a, b) and including an arrangement (10) for combining the receive branches (a, b). This is to avoid that separate equalizers are necessary for each receive branch. There is proposed that each receive branch (a, b) comprises a matched filter (1a, 1b) and an arrangement (6a, 6b) for forming an autocorrelation function (A1, A2) for each estimated impulse response (H1, H2) of the individual receive branches (a, b), that the receiver (5a, 5b, 10) comprises a first adder circuit (11) for adding together the output signals (z a', z b') weighted with weight factors of the matched filters (1a, 1b) to form a first sum (S1) and a second adder circuit (12) for adding together the autocorrelation functions (A1, A2) weighted with the weight factors of the receive branches (a, b) to form a second sum (S2) and includes an equalizer (3, 7) evaluating the first (S1) and second (S2) sum, while the weight factors are approximately inversely proportional to an instantaneous noise power (.sigma.1 2, .sigma.2 2) in each receive branch (a, b). Digital transmission systems.

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