초록 ▼

An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respec

An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respective constants, λj, where j is an index designating a particular receiver antenna, are determined by evaluating the largest eigenvector of the matrix A, where &Lgr; is a vector containing the values λj, and A is a matrix containing elements αij, which is the transfer function between the ithtransmitter antenna to the jthreceiver antenna. The αijterms are determined in the receiver in conventional ways.

대표청구항 ▼

An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respec

An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respective constants, λj, where j is an index designating a particular receiver antenna, are determined by evaluating the largest eigenvector of the matrix A, where &Lgr; is a vector containing the values λj, and A is a matrix containing elements αij, which is the transfer function between the ithtransmitter antenna to the jthreceiver antenna. The αijterms are determined in the receiver in conventional ways. l first and said real second time-slot comprises the step of connecting said real first and said real second time-slot on the same module if said incoming and said outgoing calls are on the same module, and comprises the step of connecting said real time-slots via an inter-module switch arrangement if said incoming call and said outgoing call are on different modules. 4. A switching system operative under program control for establishing connections related to two types of functions, comprising: a switching network; and processor means; said processor means for controlling the following steps: establishing a virtual connection between a real first time-slot and a first virtual time-slot for said first function;seizing a real second time-slot for said call;establishing a virtual connection between said second time-slot and a second virtual time-slot for said second type of function; andconnecting said real first and said real second time-slot for completing said call;whereby no physical loop-around trunk is required for said connection, even though said connection apparently comprises two separate connections, one for each function and uses software as if two connections were being established.5. A switching system operative under program control for establishing connections related to two types of functions, comprising; a switching network; and processor means; said processor means for controlling the following steps: detecting reception of said call in said switching system;assigning a first process to said call;seizing a real first time-slot associated with said first process for said call;assigning a second process for completing said first function for said call;said second process assigning a first virtual time-slot to said call;said second process signaling to a third process for extending said call for said second function;assigning a second virtual time-slot to said call for said third process;assigning a fourth process for completing said call;seizing a real second time-slot for said fourth process; andconnecting said real first and said real second time-slot for completing said call;wherein said second and third processes monitor said call as if they were connected to the two ends of a loop-around trunk and monitor said call using the same software as is used for monitoring an incoming call for said first function and an outgoing call for said second function respectively;whereby no physical loop-around trunk is required for said connection, even though said connection apparently comprises two separate connections, one for each function, and uses software as if two connections were being established.