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Frequency-domain detection of OQPSK signals with quasi-constant envelope and high spectral efficiency

Published: 12 August 2007 Publication History

Abstract

In this paper, we consider SC-FDE schemes (Single Carrier with Frequency-Domain Equalization) employing OQPSK (Offset Quaternary Phase Shift Keying) signals with quasi-constant envelope. To allow high spectral efficiency, different frequency channels are separated by the symbol rate, regardless of their bandwidth (which is much higher than the symbol rate for quasi-constant envelope OQPSK signals), and we consider a multi-channel frequency-domain receiver with ACI (Adjacent Channel Interference) suppression. Our performance results show that it is possible to have high spectral efficiency with quasi-constant envelope OQPSK signals. This technique is especially interesting for the uplink of future broadband wireless systems since we can employ low-cost, grossly nonlinear power amplifiers at the mobile terminals and almost all signal processing is shifted to the base station.

References

[1]
A. Gusmão, R. Dinis, J. Conceição, and N. Esteves, "Comparison of Two Modulation Choices for Broadband Wireless Communications", IEEE VTC'00 Spring, May 2000.
[2]
D. Falconer, S. Ariyavisitakul, A. Benyamin-Seeyar and B. Eidson, "Frequency Domain Equalization for Single-Carrier Broadband Wireless Systems", IEEE Comm. Mag., Vol. 4, No. 4, pp. 58--66, April 2002.
[3]
R. Dinis, D. Falconer and B. Ng, "Iterative Frequency-Domain Equalizers for Adjacent Channel Interference Suppression", IEEE GLOBECOM'05, Dec. 2005.
[4]
W. Gardner, Introduction o Random Processes with Applications to Signals and Systems, McGraw-Hill, 1990.
[5]
W. Gardner, "Exploitation of Spectral Redundancy in Cyclostationary Signals", IEEE Comm. Mag., Vol. 8, No. 2, pp. 14--36, Apr. 1991.
[6]
B. Petersen and D. Falconer, "Suppression of Adjacent Channel, Co-channel, and Intersymbol Interference by Equalizers and Linear Combiners", IEEE Trans. on Comm., Vol. 42, No. 12, pp. 3109--3118, Dec. 1994.
[7]
A. Gusmão, P. Torres, R. Dinis and N. Esteves, "A Class of Iterative FDE Techniques for Reduced-CP SC-Based Block Transmission", Int. Symposium on Turbo Codes, April 2006.
[8]
ETSI, "Channel models for HIPERLAN/2 in Different Indoor Scenarios", ETSI EP BRAN 3ERI085B, pp. 1--8, March 1998.

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  1. Frequency-domain detection of OQPSK signals with quasi-constant envelope and high spectral efficiency

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      cover image ACM Conferences
      IWCMC '07: Proceedings of the 2007 international conference on Wireless communications and mobile computing
      August 2007
      716 pages
      ISBN:9781595936950
      DOI:10.1145/1280940
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 12 August 2007

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      Author Tags

      1. ACI
      2. ACI suppression
      3. OQPSK
      4. OQPSK signals
      5. frequency domain equalization
      6. frequency-domain equalization
      7. interference cancellation
      8. multiuser detection

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