The technical success of next generation (4G) wireless systems will depend on the concepts and technology innovations in architecture and in efficient utilization of the allocated spectrum. Developments of digital communication systems in the past decade have enabled the introduction of efficient modulation and coding techniques for robust and spectrally efficient data, speech, audio and video transmission. These are the multi–carrier modulation (e.g., OFDM) and the spread spectrum technique (e.g., DS–CDMA), where both of these techniques and their combination, called Multi–Carrier Spread–Spectrum (MC–SS), are considered as potential candidates for the 4G technology. <b>Keywords:</b> Broadband cellular systems based on MC modulation (OFDM), spread spectrum techniques (DS–CDMA) and combinations of both (MC–SS, MC–CDMA, MC–DS–CDMA), covering access/distribution, mobile/fixed and outdoor/indoor applications. Efficient coding, modulation, multiplexing and detection strategies Low–complexity joint detection and interference cancellation techniques Robust synchronization and channel estimation Cell– and frequency planning aspects Realization and implementation issues
Abbrevation
MC-SS
City
Oberpfaffenhofen
Country
Germany
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Abstract