Noncoherent continuous-phase modulation for DS-CDMA

TitleNoncoherent continuous-phase modulation for DS-CDMA
Publication TypeConference Paper
Year of Publication2003
AuthorsLampe, L., R. Tzschoppe, J. B. Huber, and R. Schober
Conference NameCommunications, 2003. ICC '03. IEEE International Conference on
Pagination3282 - 3286 vol.5
Date Publishedmay.
Keywordsadditive white Gaussian noise channel, AWGN channels, code division multiple access, continuous phase modulation, demodulation, direct-sequence code-division multiple access, DS-CDMA, intersymbol interference, least mean squares methods, linear minimum mean square error, matched filtering, matched filters, minimum shift keying, minimum-shift keying, MMSE, MUI, multiuser interference, multiuser transmission, noncoherent filter adaptation, noncoherent reception, radio receivers, radio transmitters, reduced-state noncoherent sequence detection, spread spectrum communication

The combination of continuous phase modulation (CPM) with direct-sequence code-division multiple access (DS-CDMA) for multiuser transmission over the additive white Gaussian noise channel is discussed. Concentrating on the important special case of generalized minimum-shift keying, particularly simple receiver structures are obtained. To emphasize on low complexity, noncoherent reception is proposed and appropriate transmitter and receiver designs are provided. The application of reduced-state noncoherent sequence detection and noncoherent filter adaptation ensures high power efficiency and robustness against channel phase variations. Simulation results confirm that the chosen approach of CPM for DS-CDMA achieves high performance with very moderate complexity.


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