Abstract
Space-time transmit diversity (STTD) and space-time block codes (STBC) are the attractive techniques for high bit-rate and high capacity transmission. Recently, low-density parity-check (LDPC) codes have attracted much attention as the good error correcting codes achieving the near Shannon limit. The concatenation schemes of LDPC codes and STBC (LDPC-STBC), and Turbo codes and STBC (Turbo-STBC) have been proposed. The performance of the LDPC-STBC is better than that of the Turbo-STBC on a flat Rayleigh fading channel. The performance of LDPC code can be analyzed by density evolution (DE). In this paper we analyze the performance of the LDPC-STBC by using DE. Also, we optimize the irregular LDPC codes for the LDPC-STBC by using DE. Furthermore, we evaluate the error rate performance of the optimized irregular LDPC codes and the regular LDPC codes for the LDPC-STBC. From the numerical and simulation results, we show that the LDPC-STBC with the irregular LDPC codes achieves the better error rate performance than the LDPC-STBC with the regular LDPC codes.
| Original language | English |
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| Pages | 3118-3122 |
| Number of pages | 5 |
| Publication status | Published - 2004 Dec 1 |
| Externally published | Yes |
| Event | GLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States Duration: 2004 Nov 29 → 2004 Dec 3 |
Other
| Other | GLOBECOM'04 - IEEE Global Telecommunications Conference |
|---|---|
| Country/Territory | United States |
| City | Dallas, TX |
| Period | 04/11/29 → 04/12/3 |
ASJC Scopus subject areas
- General Engineering