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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sahin, C. Perrins, E. |
| Copyright Year | 2011 |
| Description | Author affiliation: Department of Electrical Engineering & Computer Science, University of Kansas, Lawrence, 66045, USA (Sahin, C.; Perrins, E.) |
| Abstract | In this paper we compute the capacity and the pragmatic capacity of aeronautical telemetry shaped-offset quadrature phase-shift keying (SOQPSK-TG). In the pragmatic approach, SOQPSK-TG is treated as a modulation scheme as opposed to an encoder, and no iterations are performed between the SOQPSK-TG demodulator and the outer binary decoder. We also evaluate the capacity of SOQPSK-TG constrained on a reduced complexity detection scheme based on the pulse amplitude modulation (PAM) representation of continuous phase modulation (CPM). The spectral efficiency of the PAM based SOQPSK-TG (SOQPSK-TG-PAM) is computed and shown to be superior to that of military-standard SOQPSK (SOQPSK-MIL) despite having the same detection complexity. We also show that the natural mapping of SOQPSK-TG between input bits and SOQPSK-TG waveforms maximizes the pragmatic capacity. Any other mapping such as differential encoding, reduces the pragmatic capacity. Finally, we present the performance results of a SCCC SOQPSK-TG pragmatic scheme, a LDPC SOQPSK-TG pragmatic scheme, and a SCCC scheme with SOQPSK-TG as the inner code. The LDPC scheme performs within 1.05 dB of the capacity curve for various coding rates. |
| Starting Page | 555 |
| Ending Page | 560 |
| File Size | 755534 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467300797 |
| ISSN | 21557578 |
| e-ISBN | 9781467300810 |
| DOI | 10.1109/MILCOM.2011.6127730 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-11-07 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Pragmatics Modulation Detectors Complexity theory Parity check codes Channel capacity Transmitters |
| Content Type | Text |
| Resource Type | Article |
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