Systems and methods for resource allocation to multiple antenna arrays for maintaining a constant bit rate (CBR) channel
First Claim
1. A wireless communication system, comprising:
- a transmit system comprising a first set of two or more antennas, the transmit system being configured to transmit a data signal from each of two or more of the antennas in the first set over a region; and
a receive system comprising a second set of two or more antennas each configured to receive the two or more transmitted data signals, wherein the transmit system is configured to adjust a transmission parameter of at least one data signal based on the level of signal fading in the region to maintain a target communication bit rate;
wherein the target communication bit rate of is a bit rate for a sustainable bit rate (SBR) conduit;
wherein the transmit system is configured to adjust a first transmission parameter and a second transmission parameter, wherein the first transmission parameter is a power at which the data signal is transmitted and the second transmission parameter is a bit rate at which the data signal is transmitted;
wherein the transmit system is configured to transmit the data signal in quadrature amplitude modulated (QAM) format and to adjust the second transmission parameter according to;
Ki=[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+wherein Ki is the number of bits represented by a QAM symbol sent from antenna i and is representative of the bit rate at which the data signal is transmitted from antenna i,wherein C is representative of the transfer matrix of the region, const is determined by;
const=−
ln(5BERtarget)·
N0/1.5wherein BERtarget is a target bit error rate in the one or more transmitted data signals, N0 is representative of the noise in the region and λ
is determined by;
Σ
[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+=target bit rate×
Tsymbol periodwherein Tsymbol period is the period of a symbol in the respective data signal, and wherein the transmit system is configured to adjust the first transmission parameter according to;
1 Assignment
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Accused Products
Abstract
A wireless communication system configured for the efficient allocation of resources is provided. The wireless communication system can include a transmit system having a first set of one or more antennas each configured to transmit a data signal over a region to a receive system having a second set of two or more antennas each configured to receive the transmitted data signal. The transmit system can be configured to adjust a transmission parameter of a data signal based on a level of signal fading in the region to sustain a target bit rate, adjust a power and a bit rate at which a data signal is transmitted based on the level of signal fading in the region and select a subset of antennas within the first set of antennas to be used to transmit a data signal based on the level of signal fading in the region.
27 Citations
17 Claims
-
1. A wireless communication system, comprising:
-
a transmit system comprising a first set of two or more antennas, the transmit system being configured to transmit a data signal from each of two or more of the antennas in the first set over a region; and a receive system comprising a second set of two or more antennas each configured to receive the two or more transmitted data signals, wherein the transmit system is configured to adjust a transmission parameter of at least one data signal based on the level of signal fading in the region to maintain a target communication bit rate; wherein the target communication bit rate of is a bit rate for a sustainable bit rate (SBR) conduit; wherein the transmit system is configured to adjust a first transmission parameter and a second transmission parameter, wherein the first transmission parameter is a power at which the data signal is transmitted and the second transmission parameter is a bit rate at which the data signal is transmitted; wherein the transmit system is configured to transmit the data signal in quadrature amplitude modulated (QAM) format and to adjust the second transmission parameter according to;
Ki=[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+wherein Ki is the number of bits represented by a QAM symbol sent from antenna i and is representative of the bit rate at which the data signal is transmitted from antenna i, wherein C is representative of the transfer matrix of the region, const is determined by;
const=−
ln(5BERtarget)·
N0/1.5wherein BERtarget is a target bit error rate in the one or more transmitted data signals, N0 is representative of the noise in the region and λ
is determined by;
Σ
[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+=target bit rate×
Tsymbol periodwherein Tsymbol period is the period of a symbol in the respective data signal, and wherein the transmit system is configured to adjust the first transmission parameter according to; - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A wireless communication system, comprising:
-
a transmit system comprising a first set of two or more antennas, the transmit system being configured to transmit a data signal from each of two or more of the antennas in the first set over a region; and a receive system comprising a second set of two or more antennas each configured to receive the two or more transmitted data signals, wherein the transmit system is configured to adjust a transmission parameter of at least one data signal based on the level of signal fading in the region to maintain a target communication bit rate; wherein the transmit system is configured to adjust a first transmission parameter and a second transmission parameter, wherein the first transmission parameter is a power at which the data signal is transmitted and the second transmission parameter is a bit rate at which the data signal is transmitted; wherein the transmission parameter is a power at which the data signal is transmitted and wherein the transmit system is configured to transmit the data signal in quadrature amplitude modulated (QAM) format and to adjust transmission parameter according to;
-
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9. A wireless communication system, comprising:
-
a transmit system comprising a first set of two or more antennas, the transmit system being configured to transmit a data signal from each of two or more of the antennas in the first set over a region; and a receive system comprising a second set of two or more antennas each configured to receive the two or more transmitted data signals, wherein the transmit system is configured to adjust a power at which at least one data signal is transmitted and a bit rate at which at least one data signal is transmitted based on a level of signal fading in the region; wherein the transmit system is configured to adjust the power and bit rate to maintain a target rate of communication; wherein the target rate of communication is a bit rate for a sustainable bit rate (SBR) conduit; wherein the transmit system is configured to transmit the data signal in quadrature amplitude modulated (QAM) format and to adjust the second transmission parameter according to;
Ki=[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+wherein Ki is the number of bits represented by a QAM symbol sent from antenna i and is representative of a bit rate at which the data signal is transmitted from antenna i, wherein C is representative of the transfer matrix of the region, const is determined by;
const=−
ln (5BERtarget)·
N0/1.5wherein BERtarget is a target bit error rate in the one or more transmitted data signals, N0 is representative of the noise in the region and λ
is determined by;
Σ
[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+=target bit rate×
Tsymbol periodwherein Tsymbol period is the period of a symbol in the respective data signal, and wherein the transmit system is configured to adjust the first transmission parameter according to; - View Dependent Claims (10, 11)
-
-
12. A wireless communication system, comprising:
-
a transmit system comprising a first set of two or more antennas, the transmit system being configured to transmit a data signal from each of two or more of the antennas in the first set over a region; and a receive system comprising a second set of two or more antennas each configured to receive the two or more transmitted data signals, wherein the transmit system is configured to adjust a power at which at least one data signal is transmitted and a bit rate at which at least one data signal is transmitted based on a level of signal fading in the region; wherein the transmit system is configured to adjust the power and bit rate to maintain a target rate of communication; wherein the target rate of communication is a bit rate for a sustainable bit rate (SBR) conduit; wherein the transmission parameter is a power at which the data signal is transmitted and wherein the transmit system is configured to transmit the data signals in quadrature amplitude modulated (QAM) format and to adjust the power at which at least one data signal is transmitted according to;
-
-
13. A wireless communication system, comprising:
-
a transmit system comprising a first set of two or more antennas each configured to transmit a data signal over a region; and a receive system comprising a second set of two or more antennas each configured to receive the transmitted data signals from the first set of antennas, wherein the transmit system is configured to select a subset of two or more antennas from the first set based on the level of signal fading in the region and transmit at least one data signal from each antenna in the subset; wherein the transmit system is configured to select the subset of antennas to maintain a target rate of communication; wherein the target rate of communication is a bit rate for a sustainable bit rate (SBR) conduit; wherein the transmit system is configured to adjust a power at which the data signal is transmitted and a bit rate at which the data signal is transmitted, and wherein the transmit system is configured to transmit the data signal in quadrature amplitude modulated (QAM) format and to adjust the bit rate according to;
Ki=[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+wherein Ki is the number of bits represented by a QAM symbol sent from antenna i and is representative of the bit rate at which the data signal is transmitted from antenna i, wherein C is representative of the transfer matrix of the region, const is determined by;
const=−
ln(5BERtarget)·
N0/1.5wherein BERtarget is a target bit error rate in the one or more transmitted data signals, N0 is representative of the noise in the region and λ
is determined by;
Σ
[log2(−
λ
)−
log2(const·
ln2·
[C+C]ii−
1)]+=CBR target bit rate×
Tsymbol periodwherein Tsymbol period is the period of a symbol in the respective data signal, and wherein the transmit system is configured to adjust the power according to; - View Dependent Claims (14, 15, 16)
-
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17. A wireless communication system, comprising:
-
a transmit system comprising a first set of two or more antennas each configured to transmit a data signal over a region; and a receive system comprising a second set of two or more antennas each configured to receive the transmitted data signals from the first set of antennas, wherein the transmit system is configured to select a subset of two or more antennas from the first set based on the level of signal fading in the region and transmit at least one data signal from each antenna in the subset; wherein the transmit system is configured to select the subset of antennas to maintain a target rate of communication; wherein the target rate of communication is a bit rate for a sustainable bit rate (SBR) conduit; wherein the transmission parameter is a power allocation to the antenna and wherein the transmit system is configured to transmit the data signal in quadrature amplitude modulated (QAM) format and to adjust the transmission parameter according to;
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Specification