Telecommunications – Carrier wave repeater or relay system – With frequency conversion
Patent
1997-07-28
2000-08-22
Hudspeth, David R.
Telecommunications
Carrier wave repeater or relay system
With frequency conversion
455 63, 455 371, H04B 710
Patent
active
061085170
ABSTRACT:
Methods and apparatus for receiving adjacent channel signals wherein adjacent channel interference effects are minimized through joint demodulation of the adjacent channel signals. A channel associated with each signal and each corresponding frequency band is estimated and used to form joint branch metrics for joint sequence estimation. In an exemplary embodiment, a baseband processor receives baseband samples corresponding to at least one carrier frequency, and then jointly demodulates at least two information streams corresponding to different carrier frequencies in dependence upon the received baseband samples. In another embodiment, a joint channel estimator receives at least two baseband sample streams, each stream corresponding to a different frequency band, and jointly estimates medium responses for each of at least two information signals which were transmitted in different frequency bands.
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Arslan Huseyin
Bottomley Gregory E.
Chennakeshu Sandeep
Gupta Someshwar C.
Abebe Daniel
Ericsson Inc.
Hudspeth David R.
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