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Digital modulator with compensation and method therefor

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-027/20
출원번호 US-0694004 (1996-08-08)
발명자 / 주소
  • Vannatta Louis Jay
  • Alberth
  • Jr. William P.
  • Frane Terrie L.
출원인 / 주소
  • Motorola, Inc.
대리인 / 주소
    Chen
인용정보 피인용 횟수 : 41  인용 특허 : 3

초록

In a digital modulator with compensation, a digital bit stream from a microphone (705), a speech coder (706), and a channel encoder (707) is sent to an encoder (720) which translates the bits into I/Q digital pulses with phase shift keying. A symbol correlater (730) notes when predetermined target p

대표청구항

[ We claim:] [1.] A digital modulator with compensation comprising:an encoder for translating an input signal into an encoded signal;a symbol correlater, coupled to the encoder, for identifying a predetermined target symbol sequence in the input signal and producing a selection signal;a compensation

이 특허에 인용된 특허 (3)

  1. Lemersal ; Jr. Donald B. (Park Ridge IL) Walczak Thomas J. (Woodstock IL) Greene Robert J. (Streamwood IL), Digital modulation circuit.
  2. Yasuda Akira (Tokyo JPX), Equipment for generating a transmit signal from first and second digital signals.
  3. Barabash Darrell W. (Calgary CAX) McGrath Alan D. (Calgary CAX) McRory John G. (Calgary CAX), QAM detector which compensates for received symbol distortion induced by a cellular base station.

이 특허를 인용한 특허 (41)

  1. Jo, Sung-Kwon; Yang, Sang-Hyun; Oh, Jeong-Tae, Apparatus and method for controlling transmission power in a mobile communication system.
  2. Kang, Min Soo; Byun, Woo Jin; Kim, Kwang Seon; Kim, Bong-Su; Song, Myung Sun, Apparatus and method for processing digital transmission/reception signals to correct in-band gain flatness.
  3. Kufer,Wolfgang, Arrangement for the synchronous output of analog signals generated in two or more digital-to-analog converters.
  4. Sha, Li; Tsai, Ching-Han; Chen, Chi-Kuang; Luo, Yaojun; Su, Guan-Ming; Zhou, Ye, Deblocking filtering.
  5. Qian, Haoli; Wu, Xing, Decision feedback equalization for signals having unequally distributed patterns.
  6. Reddy,Ajit Kumar, Digital carrierless amplitude and phase modulation (CAP) transmitter using vector arithmetic structure (VAS).
  7. Wagner, Elmar, Digital filter for transmission-end pulse shaping.
  8. Nussbaum,Howard S., Digital signal-rate converter and systems incorporating same.
  9. Wang, Yi, Encoding using motion vectors.
  10. Brunn, Brian; Leroux, Marc, Generating pulses using a look-up table.
  11. Zhuang, Xiangyang, Method and apparatus for accessing a wireless communication system.
  12. Zhao, Qing; Shen, Manyuan; Song, Leilei; Lou, Hui-Ling, Method and apparatus for detecting a boundary of a data frame in a communication network.
  13. Doucette,Paul E.; Toplicar,James R.; Ikeda,Roger M., Method and apparatus for processing signals in an array antenna system.
  14. Guenther, Mark L., Method and apparatus for representing complex vector data.
  15. Akhtman,Yosef, Method and apparatus of peak-to-average power ratio reduction.
  16. Ketonen,Veli Pekka; Maatta,Juha K., Method and circuitry for high power amplifiers with voltage conversion to avoid performance degradation, system shutdown and permanent damage in case of worst case data pattern.
  17. Wang, Hua; Liang, Paul Cheng-Po; Booth, Richard W. D.; Schell, Stephan V.; Biedka, Thomas E., Methods and apparatus for conditioning communications signals based on detection of high-frequency events in polar domain.
  18. Vinekar Sanjay R., Methods and apparatus for implementing modulators and programmable filters.
  19. Feher, Kamilo, Methods and systems for transmission of multiple modulated signals over wireless networks.
  20. Feher,Kamilo, Modulation and demodulation format selectable system.
  21. Park,Sung Ik; Lee,Yong Tae; Seo,Jae Hyun; Kim,Seung Won; Lee,Soo In, Modulation apparatus for reducing time delay of on-channel repeater in terrestrial digital TV broadcasting system.
  22. Khalona Ramon A., Multicode CDMA transmitter with improved signal processing.
  23. Feher,Kamilo, OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation.
  24. Zhang, Hongyuan; Nabar, Rohit U.; Salhotra, Atul, Protected codebook selection at receiver for transmit beamforming.
  25. Booth, Richard W. D.; Schell, Stephan V.; Biedka, Thomas E.; Liang, Paul Cheng-Po, Reduction of average-to-minimum power ratio in communications signals.
  26. Booth,Richard W. D.; Schell,Stephan V.; Biedka,Thomas E.; Liang,Paul Cheng Po, Reduction of average-to-minimum power ratio in communications signals.
  27. McCloskey, E. Daniel; Gossett, C Philip, Simultaneous use of multiple radio frequency channels.
  28. McCloskey, E. Daniel; Gossett, C. Philip, Simultaneous use of multiple radio frequency channels.
  29. McCloskey, E. Daniel; Gossett, C. Philip, Simultaneous use of multiple radio frequency channels.
  30. McCloskey, E. Daniel; Gossett, C. Philip, Simultaneous use of multiple radio frequency channels.
  31. McCloskey, E. Daniel; Gossett, C. Philip, Simultaneous use of multiple radio frequency channels.
  32. Kamilo Feher, Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems.
  33. Feher,Kamilo, Spread spectrum, cross-correlated and filtered modulated systems.
  34. Wright,Andrew S.; Ryan,Richard E.; Klijsen,Bartholomeus T. W.; Peregrym,Denis John; Davison,Brenda, Systems and methods for the dynamic range compression of multi-bearer single-carrier and multi-carrier waveforms.
  35. Wright,Andrew S.; Ryan,Richard E.; Klijsen,Bartholomeus T. W.; Peregrym,Denis John; Davison,Brenda, Systems and methods for the dynamic range compression of multi-bearer single-carrier and multi-carrier waveforms.
  36. Wright,Andrew S.; Ryan,Richard E.; Klijsen,Bartholomeus T. W.; Peregrym,Denis John; Davison,Brenda, Systems and methods for the reduction of peak to average signal levels of multi-bearer single-carrier and multi-carrier waveforms.
  37. Wright,Andrew S.; Ryan,Richard E.; Klijsen,Bartholomeus T. W.; Peregrym,Denis John; Davison,Brenda, Systems and methods for the reduction of peak to average signal levels of multi-bearer single-carrier and multi-carrier waveforms.
  38. Gossett, C. Philip, Transmitting data over discontiguous portions of radio frequency spectrum.
  39. Brunn, Brian; Leroux, Marc; Uehara, Gregory, WCDMA modulation.
  40. Banerjea, Raja, Wireless device communication in the 60 GHz band.
  41. Nishizawa, Masaharu, π/4 shift QPSK modulator and communication device.
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