A New Coding System for Improved Radio Transmission         of Digital Signals
{'Code': '15030000', 'Directorate': {'Abbreviation': 'TIP', 'LongName': 'Dir for Tech, Innovation, & Partnerships'}, 'Division': {'Abbreviation': 'TI', 'LongName': 'Translational Impacts'}}
{'SignBlockName': 'Ritchie B. Coryell', 'PO_EMAI': None, 'PO_PHON': None}
Existing digital radio systems, which use continuous phase frequency            modulation with coherent detection, trade spectral efficiency for low           bit error rate.  In certain applications, such as satellite and mobile          radio, they are subject to degradation due to fading and doppler                shifts.  This research will investigate the use of trellis coding of            the signal space with CP-FM, using non-coherent, discriminator-based            detection.  This coding scheme will be applied for both symmetrical             and asymmetrical signal constellations.  System performance in the              presence of Rician fading doppler effects will be investigated and              compared to non-coherent detection of standard modulation schemes such          as MSK, duo-binary, and TFM.  Finally, an optimum modulation scheme             will selected for a given code rate.  A successful effort could result          in more efficient communications systems that require less power for            the same bit error rate, reduced weight, higher reliability, improved           spectral efficiency, better doppler and fading performance, and lower           costs.
{'FirstName': 'Tuvia', 'LastName': 'Apelewicz', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Tuvia Apelewicz', 'EmailAddress': None, 'PI_PHON': '5167731900', 'NSF_ID': '000180062', 'StartDate': '01/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'InterDigital Telecom Inc', 'CityName': 'Great Neck', 'ZipCode': '110215308', 'PhoneNumber': '5167731900', 'StreetAddress': '833 Northern Blvd', 'StreetAddress2': 'Suite 220', 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY', 'CONGRESSDISTRICT': '03', 'CONGRESS_DISTRICT_ORG': 'NY03', 'ORG_UEI_NUM': None, 'ORG_LGL_BUS_NAME': None, 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '5371', 'Text': 'SBIR Phase I'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8760284.xml'}