Communication systems and methods for transmitting over PHICH channels

摘要

In accordance with embodiments, a communication system includes a first device and a second device in communication with the first device. The second device has at least a first pair and a second pair of antennas. The second device spreads a communication bit by a predetermined spreading factor and forms a first set of spatial block codes in frequency domain based on the spread communication bit. The first set of spatial block codes being consecutively transmitted on one of the first and second pairs of antennas.

主权项

1. A communication device, comprising:
a transmitter with a control module; and a first pair and second pair of antennas coupled to the transmitter; wherein the control module is configured to:
generate exactly three sets of spatial block codes for a common vector of symbols, wherein each of the exactly three sets includes two or more spatial block codes that are arranged in the frequency domain, wherein each of the exactly three sets is formed in the frequency domain from the common vector of symbols, wherein the common vector of symbols has been generated by spreading one or more communication bits in code-division multiplexing (CDM) fashion;cause the exactly three sets of spatial block codes to be mapped for transmission on the first pair and second pair of antennas in an alternating manner, wherein each of the exactly three sets is mapped to a corresponding one of first and second pairs of antennas; wherein a first and a third of the exactly three sets are mapped for transmission on the first pair of antennas during a first OFDM symbol duration, wherein a second of the exactly three sets is mapped for transmission on the second pair of antennas during a second OFDM symbol duration; wherein the control module is further configured to:
generate three additional sets of spatial block codes for a second common vector of symbols, wherein each of the three additional sets includes two or more spatial block codes that are arranged in the frequency domain, wherein each of the three additional sets is formed in the frequency domain from the second common vector of symbols, wherein the second common vector of symbols has been generated by spreading one or more additional communication bits in code-division multiplexing (CDM) fashion;cause the three additional sets of spatial block codes to be mapped for transmission on the first pair and second pair of antennas, wherein a first and a third of the three additional sets are mapped for transmission on the second pair of antennas during the first OFDM symbol duration, wherein a second of the three additional sets is mapped for transmission on the first pair of antennas during the second OFDM symbol duration.