The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2003
Filed:
Sep. 21, 1999
Ichiro Tsujimoto, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A spread spectrum diversity transmitter/receiver, in which a bit error rate is improved even at a severe multi path fading channel, is provided. At a transmitting section, a multi dimensional transmitting signal by code division is used not only for diversity itself but also for a convolutional encoding among diversity branches by a convolutional encoder. With this, an error correction function can be installed. At a receiving section, a Viterbi decoding is performed before a majority judgment is performed, a bit error at the front stage of a majority judging circuit is suppressed and the likelihood of the majority judgment is increased and consequently the bit error rate is largely improved.