Abstract
OFDM systems typically use coding and interleaving across subchannels to exploit frequency diversity on frequency-selective channels. This paper presents a low-complexity iterative algorithm for combined blind and semi-blind channel estimation and soft decoding in coded OFDM systems. Channel estimation is performed in the time domain using the expectation maximization (EM) algorithm to take advantage of the channel-length constraint and the extra observation offered by the cyclic-prefix. The proposed technique converges within a single OFDM symbol and, therefore, has a minimum latency and is suitable for fast time-varying channels.
Original language | English (US) |
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Pages | 1152-1156 |
Number of pages | 5 |
State | Published - 2002 |
Externally published | Yes |
Event | GLOBECOM'02 - IEEE Global Telecommunications Conference - Taipei, Taiwan, Province of China Duration: Nov 17 2002 → Nov 21 2002 |
Other
Other | GLOBECOM'02 - IEEE Global Telecommunications Conference |
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Country/Territory | Taiwan, Province of China |
City | Taipei |
Period | 11/17/02 → 11/21/02 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Global and Planetary Change