Comparison of the performance analyses of SC-FDMA and GFDMA systems under null sub-carriers based multiple carrier frequency offset synchronization


Reşat M. A.

22nd Signal Processing Comm. App. Conf., Trabzon, Türkiye, 1 - 03 Ağustos 2014, ss.1-5

  • Basıldığı Şehir: Trabzon
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-5

Özet

In this work, the Bit Error Rate performances of Grouped Frequency Division Multiple Access (GFDMA) and Single-Carrier Frequency Division Multiple Access (SC-FDMA) techniques, which use a null sub-carriers based Carrier Frequency Offset (CFO) synchronization algorithm are compared according to various parameters. GFDMA is a new emerging technique that uses an iterative structure to update estimate values and reduce errors iteration by iteration. On the other hand, GFDMA is vulnerable to CFO like SC-FDMA. This paper proposes a null sub-carrier based CFO synchronization method suitable for uplink GFDMA and SC-FDMA techniques, utilizing sub-band based sub-carrier mapping schemes.