Patents by Inventor Risto Lehtinen

Risto Lehtinen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7197287
    Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: March 27, 2007
    Assignee: Nokia Corporation
    Inventors: Miia Karjalainen, Samu Saarinen, Kauko Heinikoski, Teemu Tolonen, Juha Ylinen, Jani Suonperä, Risto Lehtinen
  • Publication number: 20060141955
    Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.
    Type: Application
    Filed: February 24, 2006
    Publication date: June 29, 2006
    Inventors: Miia Karjalainen, Samu Saarinen, Kauko Heinikoski, Teemu Tolonen, Juha Ylinen, Jani Suonpera, Risto Lehtinen
  • Patent number: 7035601
    Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: April 25, 2006
    Assignee: Nokia Corporation
    Inventors: Miia Karjalainen, Samu Saarinen, Kauko Heinikoski, Teemu Tolonen, Juha Ylinen, Jani Suonperä, Risto Lehtinen
  • Publication number: 20040171358
    Abstract: A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.
    Type: Application
    Filed: July 31, 2003
    Publication date: September 2, 2004
    Inventors: Miia Karjalainen, Samu Saarinen, Kauko Heinikoski, Teemu Tolonen, Juha Ylinen, Jani Suonpera, Risto Lehtinen
  • Patent number: 6438385
    Abstract: A method for eliminating the disturbance caused by a mobile station (MS) situated within a certain area 1. In order to be able to prevent disturbance caused by a mobile station reliably, the mobile station (MS) is provided with control means for the muting of the mobile station as a response to a predetermined message (S1) transmitted to the mobile station, and transmitting means (BTS) are arranged in said certain area 1 for the transmitting of said predetermined message to a mobile station situated in the area 1 in order to mute the mobile station.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 20, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventors: Pekka Heinonen, Jari Vainikka, Sakari Kangas, Johan Idman, Risto Lehtinen, Harri Okkonen, Ilkka Tuomi, Kari Kurronen, Jussi Rajala
  • Patent number: 6172673
    Abstract: Equipment (2, 15) is used for the reception of multimedia presentations and for their playback to the user, said equipment comprising a storage and presentation apparatus such as a computer (16) or television (3) and a terminal of a bidirectional communications system such as a mobile phone (4) or cordless phone (19). The multimedia information is loaded dynamically, and keys needed to descramble scrambled transmissions are delivered to the user via a bidirectional communications system. In the terminal equipment a local agent (14) which uses only a little of system capacity takes care of information loading and checks the available resource. Bidirectional communications can also be used for making payments to the producer and/or distributor of the multimedia service in the form of operations similar to telebank services.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: January 9, 2001
    Assignee: Nokia Mobile Phones, Ltd.
    Inventors: Risto Lehtinen, Harri Okkonen, Pekka Heinonen, Ari Ikonen