Near Optimality of Matched Filter Detection for Cyclic Prefix Direct Sequence Spread Spectrum

Conference · Wed May 13 04:00:00 EDT 2020

OSTI ID:1856791

Kenney, Brent A. ^[1]; Majid, Arslan J ^[2]; Moradi, Hussein ^[2]; Farhang-Boroujeny, Behrouz ^[3]

---

1. University of Utah PhD student
2. Idaho National Laboratory
3. University of Utah professor

Abstract—Cyclic Prefix Direct Sequence Spread Spectrum -DSSS) has been presented as a potential solution for ultrareliable low latency communications (URLLC) and massive machine type communication (mMTC), where the CP-DSSS waveform would operate as a secondary network at the same frequencies as the primary network but at much lower SNR. In this paper, we show that when operating in the low SNR regime, CP-DSSS achieves near optimum performance when using a matched filter (MF) detector at the receiver. Time reversal (TR) precoding at the transmitter is also analyzed. These results also carry forward into multi-antenna scenarios where array gain is preserved. With nearly optimal performance of MF detection, CP-DSSS can be implemented with simple device transceiver structures, reducing per-unit cost for massively deployed networks.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1856791
• Report Number(s): INL/CON-19-56962-Rev000
• Country of Publication: United States
• Language: English

Related Subjects

5G and Beyond Communications
99 GENERAL AND MISCELLANEOUS
CP-DSSS
Capacity Analysis
Filter-bank Multi-Carrier Spread Spectrum System
Wireless Communications