Method and subscriber unit for performing power control
DC CAFCFirst Claim
1. A code division multiple access subscriber unit comprising:
- a circuit, operatively coupled to an antenna configured to generate power control bits which are included on only one of an in-phase (I) channel or a quadrature (Q) channel; and
the antenna configured to output a radio frequency signal derived at least in part from the I and Q channels.
1 Assignment
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Accused Products
Abstract
A system for rapidly acquiring a spreading code, used in a code division multiple access (CDMA) system, comprises a generator for generating a first long code and a second long code, with each long code having a length of N chips. The first long code is different from the second long code. A transmitter transmits the first long code and the second long code at a first phase angle and at a second phase angle, respectively, on a carrier signal over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle, respectively, on the carrier signal. From the communications channel, an I acquisition circuit and a Q acquisition circuit may acquire, in parallel, the first long code and the second long code from the I angle and the Q angle, respectively, of the carrier signal by searching, in parallel, N/2 chips of the first long code and the second long code.
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Citations
27 Claims
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1. A code division multiple access subscriber unit comprising:
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a circuit, operatively coupled to an antenna configured to generate power control bits which are included on only one of an in-phase (I) channel or a quadrature (Q) channel; and the antenna configured to output a radio frequency signal derived at least in part from the I and Q channels. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A code division multiple access subscriber unit, comprising:
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an antenna configured to receive a first radio frequency signal; a circuit, operatively coupled to the antenna, configured to generate power control bits in response to the first radio frequency signal, wherein the circuit is further configured to establish an in-phase (I) pre-spread channel and a quadrature (Q) baseband channel, such that the power control bits are included on only one of the I pre-spread channel or the Q baseband channel; wherein a second radio frequency signal output by the code division multiple access subscriber unit includes the I and Q pre-spread channels. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for use in a code division multiple access (CDMA) subscriber unit, the method comprising:
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receiving, by the CDMA subscriber unit, a first radio frequency signal; generating power control bits in response to the first radio frequency signal; producing an in phase (I) channel and a quadrature (Q) channel, wherein only one of the I channel or the Q channel includes the power control bits; producing a second radio frequency signal including an I component and a Q component derived from the I channel and the Q channel; and transmitting the second radio frequency signal. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A code division multiple access subscriber unit comprising:
circuitry configured to receive a first radio frequency signal and generate power control bits in response to the first radio frequency signal;
wherein the power control bits are used to control a power of a base station;
wherein the circuitry is further configured to produce an in-phase (I) channel and a quadrature (Q) channel;
wherein only one of the I channel or the Q channel includes the power control bits;
wherein the circuitry is further configured to produce a second radio frequency signal including an I component and a Q component derived from the I channel and the Q channel;
wherein the circuitry is further configured to transmit the second radio frequency signal.- View Dependent Claims (22, 23, 24, 25, 26, 27)
Specification