Constant envelope multicarrier modulation: performance evaluation in AWGN and fading channels

Markku Kiviranta, Aarne Mämmelä, Danijela Cabric, David A. Sobel, Robert, W. Brodersen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    40 Citations (Scopus)


    In this paper we study the suitability of constant envelope multi-carrier modulation technique for the implementation of 1 Gbps wireless link at 60 GHz. This technique combines orthogonal frequency division multiplexing (OFDM) and phase modulation (PM) where: (1) PM creates a constant envelope signal which allows high power amplifier to operate near saturation levels thus maximizing power efficiency, (2) OFDM increases robustness to multipath fading. Since OFDM-PM symbols satisfy symmetry property, maximum-ratio combiner (MRC) can be used at the receiver. Our simulations show that in an AWGN channel at bit error level 10-3, the OFDM-PM with MRC has about 0.8 dB performance loss compared to OFDM or single carrier minimum shift keying (MSK). For Rician fading channels, we find that OFDM-PM performs comparably to MSK and outperforms uncoded OFDM. Furthermore, we show that both OFDM and OFDM-PM have similar bit error distribution characteristics, and thus the performance of OFDM-PM can be improved by the use of water-filling or coding techniques.
    Original languageEnglish
    Title of host publicationMILCOM 2005
    Subtitle of host publication2005 IEEE Military Communications Conference
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Print)0-7803-9393-7
    Publication statusPublished - 20 Mar 2005
    MoE publication typeA4 Article in a conference publication
    Event2005 IEEE Military Communications Conference, MILCOM 2005 - Atlantic City, United States
    Duration: 17 Oct 200520 Oct 2005


    Conference2005 IEEE Military Communications Conference, MILCOM 2005
    Abbreviated titleMILCOM 2005
    Country/TerritoryUnited States
    CityAtlantic City


    • AWGN channels
    • OFDM modulation
    • Rician channels
    • modulation coding
    • phase modulation
    • radio links
    • constant envelope multicarrier modulation
    • fading channels
    • maximum-ratio combiner
    • orthogonal frequency division multiplexing
    • wireless link


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