This paper deals with channel estimation for orthogonal frequency-division multiplexing (OFDM) systems with transmit diversity. Space time coded OFDM systems, which can provide transmit diversity, require perfect chan...This paper deals with channel estimation for orthogonal frequency-division multiplexing (OFDM) systems with transmit diversity. Space time coded OFDM systems, which can provide transmit diversity, require perfect channel estimation to improve communication quality. In actual OFDM systems, training sequences are usually used for channel estimation. The authors propose a training based channel estimation strategy suitable for space time coded OFDM systems. This novel strategy provides enhanced performance, high spectrum efficiency and relatively low computation complexity.展开更多
Film, one of the carriers of culture, has a coverall function. As a medium of cultural transmission, it is a way to comprehend foreign cultures and customs. Therefore, the translation of subtitles becoraes a vital imp...Film, one of the carriers of culture, has a coverall function. As a medium of cultural transmission, it is a way to comprehend foreign cultures and customs. Therefore, the translation of subtitles becoraes a vital importance. The paper is intended to analysis main strategies for English film subtitle translation based on main principles, according to the method of analyzing the diversities of various cultures and real examples from movies. ＂translators are required to know well about different cultures and pay more attention to accumulation of usual experiences.展开更多
Due to the expanding variety of modes of communication and tools for meaning-making, multimodal representation and multiple forms of text have been a common occurrence. It is essential for today＇s reader/viewer to fo...Due to the expanding variety of modes of communication and tools for meaning-making, multimodal representation and multiple forms of text have been a common occurrence. It is essential for today＇s reader/viewer to foster the capacity to critically deconstruct and reconstruct multimodal texts. And it is a must to expand traditional conceptions of literacy to multiliteracies. This paper, from the perspective of both theories and practices, explores and analyzes visual literacy, media literacy, digital literacy, critical literacy, and postmodern literacy in college English pedagogy, so as to fully develop the learners＇ multiliteracies展开更多
Such an extremely difficult issue as cultural diversity is confronted by the existence and evolution of enterprises with the rapid development of global economy of the present. If the establishment is to boost competi...Such an extremely difficult issue as cultural diversity is confronted by the existence and evolution of enterprises with the rapid development of global economy of the present. If the establishment is to boost competitiveness, it must have a quite good knowledge of target market so as to formulate some efficient strategies of broadcasting in its management, and the best way to resolve such problem is to eliminate cultural barriers with the adoption of the transmission of cross-cultural advertisements. This thesis shall research cultural diversities between eastern nations and western ones, and explore the effect the diversities have upon cross-cultural transmission, thus to propose an approach of eliminating cultural isolation with the adoption of effective techniques and manners of the transmission of cross-cultural advertisements.展开更多
基金Project supported by the Hi-Tech Research and Development Pro-gram (863) of China (No. 2003AA123310) and the National Natural Science Foundation of China (No. 60332030)
文摘This paper deals with channel estimation for orthogonal frequency-division multiplexing (OFDM) systems with transmit diversity. Space time coded OFDM systems, which can provide transmit diversity, require perfect channel estimation to improve communication quality. In actual OFDM systems, training sequences are usually used for channel estimation. The authors propose a training based channel estimation strategy suitable for space time coded OFDM systems. This novel strategy provides enhanced performance, high spectrum efficiency and relatively low computation complexity.
文摘Film, one of the carriers of culture, has a coverall function. As a medium of cultural transmission, it is a way to comprehend foreign cultures and customs. Therefore, the translation of subtitles becoraes a vital importance. The paper is intended to analysis main strategies for English film subtitle translation based on main principles, according to the method of analyzing the diversities of various cultures and real examples from movies. ＂translators are required to know well about different cultures and pay more attention to accumulation of usual experiences.
文摘Due to the expanding variety of modes of communication and tools for meaning-making, multimodal representation and multiple forms of text have been a common occurrence. It is essential for today＇s reader/viewer to foster the capacity to critically deconstruct and reconstruct multimodal texts. And it is a must to expand traditional conceptions of literacy to multiliteracies. This paper, from the perspective of both theories and practices, explores and analyzes visual literacy, media literacy, digital literacy, critical literacy, and postmodern literacy in college English pedagogy, so as to fully develop the learners＇ multiliteracies
文摘Such an extremely difficult issue as cultural diversity is confronted by the existence and evolution of enterprises with the rapid development of global economy of the present. If the establishment is to boost competitiveness, it must have a quite good knowledge of target market so as to formulate some efficient strategies of broadcasting in its management, and the best way to resolve such problem is to eliminate cultural barriers with the adoption of the transmission of cross-cultural advertisements. This thesis shall research cultural diversities between eastern nations and western ones, and explore the effect the diversities have upon cross-cultural transmission, thus to propose an approach of eliminating cultural isolation with the adoption of effective techniques and manners of the transmission of cross-cultural advertisements.
