New direction of broadband wireless technology

Fumiyuki Adachi, Eisuke Kudoh

    Research output: Contribution to journalArticlepeer-review

    48 Citations (Scopus)


    The most important technical challenge for the realization of 4G mobile networks is twofold: (a) to overcome the highly frequency-selective fading channel and (b) to significantly reduce the transmit power from mobile terminals. Recently, it has been shown that the application of frequency-domain equalization (FDE) can take advantage of channel frequency-selectivity and improve the transmission performance of single-carrier (SC) as well as multi-carrier (MC) signal transmissions. Either SC or MC can be used for the downlink (base-to-mobile) to achieve almost the same bit error rate (BER) performance. However, for the uplink (mobile-to-base) applications, SC transmission is more appropriate since it has less peak power. For broadband data transmissions, transmit power reduction is a very important issue. Applying wireless multi-hop technique is a possible solution to this issue. In this paper, we will discuss about some important 4G wireless techniques.

    Original languageEnglish
    Pages (from-to)969-983
    Number of pages15
    JournalWireless Communications and Mobile Computing
    Issue number8
    Publication statusPublished - 2007 Oct 1


    • Cellular network
    • Equalisation
    • Mobile communications
    • Multi-carrier
    • Multi-hop
    • Single-carrier
    • Wireless access

    ASJC Scopus subject areas

    • Information Systems
    • Computer Networks and Communications
    • Electrical and Electronic Engineering


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