Spread spectrum transmission systems

An apparatus, comprising at least one processor and at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus to:

• receive code phase signalling by an input, the code phase signalling time representing an offset time of a synchronisation code from a reference time, wherein:
• the reference time is associated with the time of transmission of a particular reference portion of a modulation code of direct sequence spread spectrum signalling;
• and
• the offset time is associated with the time of transmission of a subsequently transmitted offset portion of the modulation code of direct sequence spread spectrum signalling;
• and
• use the code phase time signalling to assist in signal acquisition of direct sequence spread spectrum signalling by synchronising:
• the phase of the modulation code of the direct sequence spread spectrum signalling received by the apparatus, with
• the phase of the synchronisation code, the synchronisation code being provided from within the apparatus and having a sequence that corresponds to the modulation code sequence.

Non-transitory computer-readable medium, encoded with computer code, the code being configured to, when run on a processor, to perform at least:

• providing, to an output, code phase time signalling representing an offset time of a synchronisation code from a reference time, wherein:
• the reference time is associated with the time of transmission of a particular reference portion of a modulation code of the direct sequence spread spectrum signalling;
• and
• the offset time is associated with the time of transmission of a subsequently transmitted offset portion of the modulation code of the direct sequence spread spectrum signalling.

Non-transitory computer-readable medium, encoded with computer code, the code being configured to, when run on a processor, to perform at least:

• receiving code phase signalling by an input, the code phase signalling time representing an offset time of a synchronisation code from a reference time, wherein:
• the reference time is associated with the time of transmission of a particular reference portion of a modulation code of direct sequence spread spectrum signalling;
• and
• the offset time is associated with the time of transmission of a subsequently transmitted offset portion of the modulation code of direct sequence spread spectrum signalling;
• and
• using the code phase time signalling to assist in signal acquisition of direct sequence spread spectrum signalling by synchronising:
• the phase of the modulation code of the direct sequence spread spectrum signalling received by an apparatus, with
• the phase of the synchronisation code, the synchronisation code being provided from within said apparatus and having a sequence that corresponds to the modulation code sequence.

A method, comprising:

• providing, to an output, code phase time signalling representing an offset time of a synchronisation code from a reference time, wherein:
• the reference time is associated with the time of transmission of a particular reference portion of a modulation code of the direct sequence spread spectrum signalling;
• and
• the offset time is associated with the time of transmission of a subsequently transmitted offset portion of the modulation code of the direct sequence spread spectrum signalling.

A method, comprising:

• receiving code phase signalling by an input, the code phase signalling time representing an offset time of a synchronisation code from a reference time, wherein:
• the reference time is associated with the time of transmission of a particular reference portion of a modulation code of the direct sequence spread spectrum signalling;
• and
• the offset time is associated with the time of transmission of a subsequently transmitted offset portion of the modulation code of the direct sequence spread spectrum signalling;
• and
• using the code phase time signalling to assist in signal acquisition of direct sequence spread spectrum signalling by synchronising:
• the phase of the modulation code of the direct sequence spread spectrum signalling received by an apparatus, with
• the phase of the synchronisation code, the synchronisation code being provided from within said apparatus and having a sequence that corresponds to the modulation code sequence.