1
Samir N Hulyalkar, David A Bryan, Carlo Basile: Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation. North American Philips Corporation, Michael E Marion, March 1, 1994: US05291289 (195 worldwide citation)

A method and apparatus for modulating and demodulating an MCM television signal is described which is particularly useful in proposed "simulcast" HDTV terrestrial broadcasting. The MCM spectrum of the television signal is shaped using weighting coefficients which are derived from either an idealized ...


2
Thomas P Krauss, Kevin L Baum, Vijay Nangia: Method and apparatus for transmission and reception within an OFDM communication system. Motorola, Kenneth A Haas, Jeffrey K Jacobs, July 10, 2007: US07242722 (74 worldwide citation)

In an OFDM system the same Walsh code is used at the same time for a plurality of transmitters. The multiple transmitters can be from the same, or different devices (e.g., different base stations on the downlink, different terminals on the uplink). Each subcarrier/antenna combination will share a si ...


3
Yasunori Suzuki, Ken Kumagai, Toshio Nojima: Method and apparatus for transmission and reception. Nippon Telegraph & Telephone Corporation, Pollock Vande Sande & Amernick RLLP, January 23, 2001: US06178158 (66 worldwide citation)

In a method for transmission and reception over N transmission channels, the transmitting side performs orthonormal transform processing of N-channel modulated signals so that the resulting transformed output signals have lower cross-correlation, and the transformed N-channel signals are multiplexed ...


4
Brian William Kroeger, Stephen Douglas Mattson: Method and apparatus for transmission and reception of compressed audio frames with prioritized messages for digital audio broadcasting. iBiquity Digital Corporation, Robert P Lenart Esq, Pietragallo Bosick & Gordon, April 13, 2004: US06721337 (59 worldwide citation)

A method for transmission of compressed data for a digital audio broadcasting system comprises the steps of producing digital information representative of an audio signal; estimating the number of bits to be allocated to the digital information in a modem frame; encoding the digital information wit ...


5
Brian K Classon, Kevin L Baum, Philippe J Sartori: Method and apparatus for transmission and reception of narrowband signals within a wideband communication system. Motorola, May 16, 2006: US07047006 (53 worldwide citation)

Narrowband remote units will scan over frequencies within a wideband channel spectrum, evaluating frequency-selective channel characteristics. The best sub-channel(s) for communication will be determined and reported back to a base station via a channel-quality report message. The base station will ...


6
Classon Brian K, Baum Kevin L, Sartori Philippe J: Method and apparatus for transmission and reception of narrowband signals within a wideband communication system. Motorola, Classon Brian K, Baum Kevin L, Sartori Philippe J, MAY Steven A, November 17, 2005: WO/2005/109837 (39 worldwide citation)

Narrowband remote units (101-103) scan over frequencies within a wideband channel spectrum, evaluating frequency-selective channel characteristics. The best sub-channel(s) for communication is determined and reported back to a base station (104) via a channel-quality report message. The base station ...


7
Eugene J Bruckert, Thomas A Sexton: Method and apparatus for transmission and reception of a transmission rate in a CDMA communication system. Motorola, Kenneth A Haas, July 25, 2000: US06094428 (37 worldwide citation)

In a communication system where a continuous reverse channel transmission is utilized by redundant transmission of Walsh codes, a current transmission rate is modulated onto Walsh code polarity. In particular, a remote unit operating at a particular transmission rate utilizing a continuous reverse c ...


8
Brian William Kroeger, Jeffrey S Baird: Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcasting. Ibiquity Digital Corporation, Robert P Lenart Esq, Pietragallo Bosick & Gordon, April 15, 2003: US06549544 (35 worldwide citation)

A method for transmission of data in a digital audio broadcasting system includes the steps of providing a plurality of orthogonal frequency division multiplexed sub-carriers, with the sub-carriers including data sub-carriers and reference sub-carriers, and modulating the data sub-carriers with a di ...


9
Thomas P Krauss, Kevin L Baum, Vijay Nangia: Method and apparatus for transmission and reception within an OFDM communication system. Motorola, February 14, 2006: US06999467 (28 worldwide citation)

A staggered spread OFCDM scheme is utilized that improves channel estimation. In a first embodiment, each chip stream is time shifted by a predetermined amount and then transmitted on a predetermined subcarrier. This results in time-spread symbols being staggered (time-offset) on different subcarrie ...


10
Brian William Kroeger, Jeffrey S Baird: Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcasting. iBiquity Digital Corporation, Robert P Lenart Esq, Pietragallo Bosick & Gordon, January 3, 2006: US06982948 (21 worldwide citation)

A transmitter for transmitting data in a digital audio broadcasting system includes a signal generator for providing a plurality of orthogonal frequency division multiplexed sub-carriers, with the sub-carriers including data sub-carriers and reference sub-carriers, and a modulator for modulating the ...