Patent
Rate control device and method for cdma communication system
TLDR
In this paper, a traffic channel transmission device for a CDMA communication system using a plurality of coding rates and orthogonal codes, determines a present channel condition and adaptively selects a coding rate and an Orthogonal code according to the determination.Abstract:
A traffic channel transmission device for a CDMA communication system using a plurality of coding rates and orthogonal codes, determines a present channel condition and adaptively selects a coding rate and an orthogonal code according to the determination. In the device, a channel receiver receives a channel signal and a controller analyzes the received signal to decide an environment of a channel in service and generates a coding rate select signal and orthogonal code information according to the decision result. A channel transmitter includes a channel encoder (311, 312) for encoding transmission data at a coding rate selected according to the coding rate select signal (Csel) and an orthogonal modulator (361, 362) for generating an orthogonal code according to the orthogonal code information to spread the encoded data with the generated orthogonal code, whereby the channel transmitter adaptively encodes and spreads the transmission data according to the channel environment. The orthogonal code information includes a number and a length of the orthogonal code.read more
Citations
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References
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Patent
Code division multiple access system providing load and interference based demand assignment service to users
Chih-Lin I,Sanjiv Nanda +1 more
TL;DR: In this article, the received pilot strength data is used to determine an increased data rate to be assigned to the requesting mobile station when the received data has a predetermined relationship to an established threshold.
Patent
Programmable modem apparatus for transmitting and receiving digital data, design method and use method for said modem
Lieven Philips,Jan Vanhoof,Maryse Wouters,Rik De Wulf,Veerle Derudder,Carl Van Himbeeck,Ivo Bolsens,Hugo De Man,Bert Gyselinckx +8 more
TL;DR: The programmable modem for digital data of the present invention as mentioned in this paper provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications, and is specifically programmable to alter the parameters of the modem to improve performance.
Patent
High data rate CDMA wireless communication system
TL;DR: In this article, a set of individually gain adjusted subscriber channels are formed via the use of orthogonal sub-channel codes, which are comprised of four Walsh codes and the remaining two transmit channels are used for transmitting non-specified digital data including user data or signaling data.
Patent
Adaptive power control based on a rake receiver configuration in wideband CDMA cellular systems (WCDMA) and methods of operation
TL;DR: In this paper, a WCDMA system includes a Base Station (BS) or forward transmitter and a pilot channel that transmits control signals between a Mobile Station (MS) and BS to reconfigure their transmitter/receiver according to the prediction of the channel power and channel power probability density function separated into three distinct equal probable regions.
Patent
Code-rate increased compressed mode ds-cdma systems and methods
TL;DR: In this paper, the introduction of discontinuous transmission in CDMA communications is achieved by selectively puncturing coded output of a convolutional encoder, leaving an idle part of the frame in which to perform other functions.
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