At Analysys Mason (2008) Next Generation Radio Technologies
1. Next Generation Radio Technologies Prepared for Analysys Mason Consulting – Manchester Mehul Bhandari 4G
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9. Technology HSPA/LTE WIMAX Subscribers Over 2.5 billion today;3.4 billion expected by 2009 (Including GSM) Less than 100 million by 2012 Maturity Extremely Mature Emerging Adoption Incumbent Cellular Operators Globally New Entrants, specialised WIMAX companies with less commercial experience
10. Technology HSPA/LTE WIMAX Coverage Global Extremely Limited/None Devices Broad selection of GSM/EDGE/UMTS/HSPA devices None Yet commercially, only prototypes Radio Technology Highly optimized CDMA for HSPA, highly optimized OFDMA for LTE Optimized OFDMA in Wave 1,highly optimized in WAVE 2
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Editor's Notes
The OFDM signal is able to support NLOS performance while maintaining a high level of spectral efficiency, maximizing the available spectrum Superior NLOS performance enables significant equalizer design simplification Supports operation in multi-path propagation environments Scalable bandwidths provide flexibility and potentially reduce capital Expense OFDM is a multi carrier modulation scheme that transmits data over a number of sub-carriers. A conventional transmission uses only a single carrier, which is modulated with all the data to be sent. OFDM breaks the data to be sent in to small chunks, allocating each sub data stream to a sub-carrier. The data is sent in parallel, so that instead of sending just a single bit of information per symbol, many bits are sent per symbol. The symbol rate for OFDM is N times lower than single carrier
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