Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (6): 1699-1705.doi: 10.12305/j.issn.1001-506X.2021.06.30

• Communications and Networks • Previous Articles     Next Articles

DSLM method without side information in FBMC/OQAM systems

Lei LI, Lunsheng XUE*, Xihong CHEN, Dizhe YUAN   

  1. Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China
  • Received:2020-07-09 Online:2021-05-21 Published:2021-05-28
  • Contact: Lunsheng XUE

Abstract:

Dispersive selected mapping (DSLM) is a technique to reduce peak-to-average power ratio (PAPR) of the system of filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM), but this method requires the transmission of additional bitside information (SI). In order to suppress the PAPR of the FBMC/OQAM system and improve the spectrum utilization rate of the system, on the basis of the DSLM, a method without side information for the selective mapping (W-DSLM) is proposed. W-DSLM improves the phase sequence by selecting a specific position in the phase sequence and insert an expansion factor with a modulus greater than one. Then, using the energy difference between the expansion factor and the adjacent position to obtain the optimal phase sequence at the receiver, thus the transmitted symbol is recovered. The insertion of the expansion factor avoids the transmission of sideband information, which can effectively improve the spectrum efficiency of the system. Simulation results verify the effectiveness of this method.

Key words: filter bank multicarrier (FBMC), offset quadrature amplitude modulation (OQAM), peak to average power ratio (PAPR), dispersive selected mapping (DSLM), without side information

CLC Number: 

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