Patent
Allocation of radio resource in orthogonal frequency division multiplexing system
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TLDR
In this article, a method of allocating a radio resource in an orthogonal frequency division multiplexing (OFDM) system comprises receiving data associated with radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting uplink data to the base station.Abstract:
An uplink capacity is increased by a method in which more than two mobile stations simultaneously use a radio resource allocated to one mobile station. A method of allocating a radio resource in an orthogonal frequency division multiplexing system comprises receiving data associated with a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting uplink data to the base station. The control parameters comprises orthogonal pilot pattern indicator for using orthogonal pilot patterns associated with supporting at least concurrent dual transmission by at least one mobile station, and for use in the same frequency band and same time duration. The orthogonal pilot patterns comprises at least a minus pilot being used for an uplink basic allocation unit. The mobile station then transmits uplink data to the base station by using the orthogonal pilot patterns.read more
Citations
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References
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Patent
Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
TL;DR: In this paper, a method and apparatus for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system, is provided.
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TL;DR: In this paper, a particular diversity transmission mode is selected for use from among a number of possible transmission modes, such as frequency diversity, Walsh diversity, space time transmit diversity, and a Walsh-STTD.
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TL;DR: In this article, the various types of pilot include beacon pilot, MIMO pilot, carrier pilot, steered reference or steered pilot, and steered reference may be used for channel estimation.
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Wireless communication methods, systems, and signal structures
TL;DR: In this article, a frame structure, methods of combining various types of MIMO such as STTD and SM, subchannel definitions, sub-FFT channel constructions, fast control channels, additional modulations, and group antenna transmit diversity are provided.
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Methods and apparatus for multi-carrier communication systems with adaptive transmission and feedback
TL;DR: In this article, the modulation scheme, coding attributes, training pilots, and signal power may be adjusted to adapt to channel conditions in order to maximize the overall system capacity and spectral efficiency.