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US 6,731,618 B1Granted
Coding for multi-user communication
AssigneeAirvana, Inc.
InventorsSae-Young Chung, Dae-Young Kim
Life of this patent
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Abstract
Packets are generated for delivery over a forward communication channel from a base station to a remote station, in which a parameter that characterizes the packets being generated is determined adaptively based on factors not limited to the data rate of the channel.
Claims24
A method comprising,
- generating packets for delivery over a forward communication channel from a base station to a remote station, the forward communication channel comprising a forward packet data preamble subchannel of a wireless communication system,
- adaptively determining a parameter that characterizes the packets being generated based on factors not limited to a data rate of the forward communication channel, and
- spreading energy required to send preamble data substantially evenly among time slots using a unitary matrix,
- wherein the preamble data occupies more than one block of Walsh functions depending on code space available.
1 more element
A method comprising:
- generating at a base station a data packet for delivery over a forward communication channel from the base station to a remote station,
- wherein one or more parameters that characterize the data packet being generated are determined adaptively based on factors not limited to the data rate of the data packet;
- and
- generating at the base station preamble data conveying information on the one or more parameters for delivery over the forward communication channel from the base station to the remote station,
- wherein the preamble data occupies more than one block of Walsh functions and a unitary matrix is used to spread energy of the preamble data substantially evenly among the blocks of Walsh functions the preamble data occupies.
2 more elements
Dependencies are inferred from the claim text.