Feedback Allocation for OFDMA Systems With Slow Frequency-Domain Scheduling
نویسندگان
چکیده
منابع مشابه
Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
The orthogonal frequency division multiple access (OFDMA) scheme has been selected as a potential candidate for many emerging broadband wireless access standards. In this paper, a new joint scheduling and resource allocation scheme is proposed for the OFDMA systems using contiguous subcarrier permutation. The proposed resource allocation algorithm provides contiguous sets of frequency-time reso...
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In the next generation of wireless communication, adaptive resource allocation techniques will play an important role to improve quality of service and spectral efficiency. In order to employ adaptive fairness scheduling for multiple-input single-output (MISO) orthogonal frequency-division multiple access (OFDMA), the channel state information (CSI) belonging to all users is required at the bas...
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Since OFDMA is extremely sensitive to frequency offsets, one of the most prominent issues in the design and implementation of OFDMA based systems is the need for a very fine frequency synchronization. The task of frequency synchronization becomes even more challenging in the uplink OFDMA based systems where one transmission symbol is generated by the contribution of different users. Our goals i...
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Modern wireless networks are faced with an increasing demand for higher data rates, better quality of service, and higher overall network capacities. In order to comply to these demands various limits, like the limited availability of the frequency spectrum and a complex space-time varying wireless environment must be overcome. Transmission schemes based on Multiple Input Multiple Output (MIMO)...
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Scheduling and resource allocation are essential components of wireless data systems. Here by scheduling we refer the problem of determining which users will be active in a given time-slot; resource allocation refers to the problem of allocating physicallayer resources such as bandwidth and power among these active users. In modern wireless data systems, frequent channel quality feedback is ava...
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ژورنال
عنوان ژورنال: IEEE Transactions on Signal Processing
سال: 2012
ISSN: 1053-587X,1941-0476
DOI: 10.1109/tsp.2012.2218243