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Differential Space Time Block Codes Using Nonconstant Modulus Constellations for Four Transmit Antennas Seung Hoon NAM Jaehak CHUNG Chan-Soo HWANG Young-Ho JUNG Publication IEICE TRANSACTIONS on Communications Vol.E88-B No.4 pp.1705-1709 Publication Date: 2005/04/01 Online ISSN: DOI: 10.1093/ietcom/e88-b.4.1705 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: space time codes, differential space time block codes, differential encoding/decoding, Full Text: PDF(356.4KB)>>
Summary: We extend the differential space time block code (STBC) using nonconstant modulus constellations of two transmit antennas to four transmit antennas case. The proposed method obtains larger minimum Euclidean distances than those of conventional differential STBC with PSK constellations. We derive the symbol error rate (SER) performance of the proposed method and demonstrate the SER performance using computer simulations for both static and fast fading channels. For transmission rates greater than 2 bits/channel use and 3 bits/channel use, the proposed method outperforms the conventional differential STBC. | |||||
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