Method and apparatus for diversity transmission from a mobile station
First Claim
1. A mobile station comprising:
- a transmitter for generating a transmit signal;
a splitter for splitting the transmit signal into two signals, the splitter being coupled to the transmitter;
a modem for determining whether diversity transmission is necessary, and if not, for disabling the splitter so that the transmit signal is not split into two signals;
a power amplifier for amplifying each of the two signals;
a transmit signal differentiator for differentiating the two amplified signals into a first differentiated signal and a second differentiated signal, the transmit signal differentiator in electrical communication with the splitter;
a first antenna for transmitting the first differentiated signal; and
a second antenna for transmitting the second differentiated signal.
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Accused Products
Abstract
A method and system for diversity transmission from a mobile station. Signals sent from a mobile station to a base station may suffer from fading. To combat this, diversity transmission is used to compensate for the effects of fading and destructive multi-path interference by sending two or more signals. Signals to be transmitted from the mobile station are split into a first split signal and a second split signal and diversified from one another. Diversification of the split signals may be accomplished by modifying the phase of either the first split signal, the second split signal or both the first and second split signal. The diversified signals may then be transmitted from a first and second antenna.
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Citations
7 Claims
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1. A mobile station comprising:
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a transmitter for generating a transmit signal; a splitter for splitting the transmit signal into two signals, the splitter being coupled to the transmitter; a modem for determining whether diversity transmission is necessary, and if not, for disabling the splitter so that the transmit signal is not split into two signals; a power amplifier for amplifying each of the two signals; a transmit signal differentiator for differentiating the two amplified signals into a first differentiated signal and a second differentiated signal, the transmit signal differentiator in electrical communication with the splitter; a first antenna for transmitting the first differentiated signal; and a second antenna for transmitting the second differentiated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification