Effects of MLSE equalization for constant envelope modulation signals affected by ADC nonlinearity

Ryuta Fukunaga, Osamu Muta, Hiroshi Furukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A radio relay multi-hop transmission using Multi-Input Multi-Output (MIMO) is a promising technique to construct indoor wireless communication systems. To improve power efficiency at the power amplifier on the transmitter side, this paper considers MIMO constant envelope modulation (CEM) transceiver. On the other hand, the resolution of A/D converter (ADC) affects hardware complexity on MIMO receiver circuits. Although analog hardware complexity on MIMO receiver circuits can be reduced by decreasing the resolution of ADC, it causes severe ADC nonlinearity which affects achievable performance, i.e., there a trade-off between hardware complexity and non-linearity on ADC circuits for MIMO receiver. The objective of this paper is to investigate the influence of ADC nonlinearity on achievable performance in MIMO differential encoded Gaussian minimum shift keying (D-GMSK) systems using a reduced-state modified maximum sequence estimation (MLSE) equalization. In the MLSE equalization for D-GMSK systems, the influence of ADC nonlinearity is mitigated by approximating the received signal in presence of quantization error. Computer simulation results show that the MLSE equalization scheme approximating the influence of ADC nonlinearity improves BER performance of MIMO and SISO D-GMSK systems using a low resolution ADC compared to cases without using the above approximation in multi-path Rayleigh fading conditions.

Original languageEnglish
Title of host publicationInternational Conference on Information Networking 2014, ICOIN 2014
PublisherIEEE Computer Society
Pages530-535
Number of pages6
ISBN (Print)9781479936892
DOIs
Publication statusPublished - Jan 1 2014
Event2014 28th International Conference on Information Networking, ICOIN 2014 - Phuket, Thailand
Duration: Feb 10 2014Feb 12 2014

Publication series

NameInternational Conference on Information Networking
ISSN (Print)1976-7684

Other

Other2014 28th International Conference on Information Networking, ICOIN 2014
CountryThailand
CityPhuket
Period2/10/142/12/14

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Information Systems

Cite this

Fukunaga, R., Muta, O., & Furukawa, H. (2014). Effects of MLSE equalization for constant envelope modulation signals affected by ADC nonlinearity. In International Conference on Information Networking 2014, ICOIN 2014 (pp. 530-535). [6799738] (International Conference on Information Networking). IEEE Computer Society. https://doi.org/10.1109/ICOIN.2014.6799738