Iterative detection and ICI cancellation for MISO-Mode DVB-T2 system with dual carrier frequency offsets

Eun Sung Jeon, Jeong Wook Seo, Jang Hoon Yang, Jong Ho Paik, Dong Ku Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In the DVB-T2 system with a multiple-input single-output (MISO) transmission mode, Alamouti coded orthogonal frequency division multiplexing (OFDM) signals are transmitted simultaneously from two spatially separated transmitters in a single frequency network (SFN). In such systems, each transmit-receive link may have a distinct carrier frequency offset (CFO) due to the Doppler shift and/or frequency mismatch between the local oscillators. Thus, the received signal experiences dual CFOs. This not only causes dual phase errors in desired data but also introduces inter-carrier interference (ICI), which cannot be removed completely by simply performing a CFO compensation. To overcome this problem, this paper proposes an iterative detection with dual phase errors compensation technique. In addition, we propose a successive-iterative ICI cancellation technique. This technique successively eliminates ICI in the initial iteration by exploiting pre-detected data pairs. Then, in subsequent iterations, it performs a fine interference cancellation using a priori information, iteratively fed back from the channel decoder. In contrast to previous works, the proposed techniques do not require estimates of dual CFOs. Their performances are evaluated via a full DVB-T2 simulator. Simulation results show that the DVB-T2 receiver equipped with the proposed dual phase errors compensation and the successive-iterative ICI cancellation techniques achieves almost the same performance as ideal dual CFOs-free systems, even for large dual CFOs.

Original languageEnglish
Pages (from-to)702-721
Number of pages20
JournalKSII Transactions on Internet and Information Systems
Volume6
Issue number2
DOIs
Publication statusPublished - 2012 Feb 28

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Iterative detection and ICI cancellation for MISO-Mode DVB-T2 system with dual carrier frequency offsets'. Together they form a unique fingerprint.

Cite this