Simple block space time transmit diversity using multiple spreading codes

Abstract

A base station and user equipment (UE) for use in a CDMA communication system are disclosed. The base station includes a first and second antenna for transmitting first and second communication bursts. The first channelization device spreads data using a first channelization code and the second channelization device spreads the data using a second channelization code. The UE has a data detection device for receiving a signal including the first and second communication bursts.

What is claimed is: 
     
         1 . A device for use in a wireless network comprising:
 a first and second antenna;   a circuit configured to produce at least one data symbol;   the circuit is further configured to produce a first and a second signal;   wherein the first signal includes the at least one data symbol combined with a first scrambling sequence and a first spread sequence and inserted within the first combined at least one data symbol a first training sequence; wherein the second signal includes the at least one data symbol combined with a second scrambling sequence and a second spread sequence and inserted within the second combined at least one data symbol a second training sequence; wherein the first and second spread sequence are different and the first and second training sequence are different; and   the circuit is further configured to provide the first signal to the first antenna for transmission and the second signal to the second antenna for transmission.   
     
     
         2 . A method for use in a device in a wireless network, the method comprising:
 producing, by the device, at least one data symbol;   producing a first and a second signal; wherein the first signal includes the at least one data symbol combined with a first scrambling sequence and a first spread sequence and inserted within the first combined at least one data symbol a first training sequence; wherein the second signal includes the at least one data symbol combined with a second scrambling sequence and a second spread sequence and inserted within the second combined at least one data symbol a second training sequence; wherein the first and second spread sequence are different and the first and second training sequence are different; and   transmitting, by the device, the first signal by a first antenna for transmission and the second signal to a second antenna for transmission; wherein the first and second antenna are different.   
     
     
         3 . A device for use in a wireless network comprising:
 a circuit configured to receive a first signal from a first antenna and a second signal from a second antenna from a same device in a wireless network; wherein the first signal includes at least one data symbol combined with a first scrambling sequence and a first spread sequence and inserted within the first combined at least one data symbol a first training sequence; wherein the second signal includes the at least one data symbol combined with a second scrambling sequence and a second spread sequence and inserted within the second combined at least one data symbol a second training sequence; wherein the first and second spread sequence are different and the first and second training sequence are different.   
     
     
         4 . The device of  claim 3  wherein the circuit is further configured to perform a first channel estimation using the received first training sequence and a second channel estimation using the receive second training sequence. 
     
     
         5 . The device of  claim 3  wherein the circuit is further configured to combine the at least one data symbol recovered from the first signal with the at least one data symbol recovered from the second signal.