Noncoherent continuous-phase modulation for DS-CDMA
نویسندگان
چکیده
| 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 lter adaptation ensures high power eÆciency and robustness against channel phase variations. Simulation results con rm that the chosen approach of CPM for DSCDMA achieves high performance with very moderate complexity. Keywords| CPM, CDMA, Noncoherent transmission, GMSK
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