Sensivity Analysis of Near-Far Resistant DS-CDMA Receivers to Propagation Delay Estimation Errors

• We consider an asynchronous direct-sequence code division multiple access (DS-CDMA) communication system operating over an AWGN channel. In certain applications, the near-far problem can be the limiting factor for the capacity of a DS-CDMA system. Several near-far resistant receivers have therefore been proposed (e.g., the decorrelating receiver). These receivers assume perfect knowledge of the propagation delay from all users to thereceiver. In practice, the delays need to be estimated and will thus be subject to estimation errors. We evaluate the performance penalty these errors will impose on previously proposed near-far resistant receivers.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)

Nyckelord

Decorrelation

Delay estimation

Estimation error

Multiaccess communication

Multiple access interference

Phase estimation

Power control

Power system modeling

Propagation delay

Sensitivity analysis

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)