Title :
Throughput analysis of direct-sequence CDMA-ALOHA in a near-far environment
Author :
Perle, Hans-Christian ; Rechberger, Bruno
Author_Institution :
Commun. Technol. Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
The steady-state packet throughput characteristics of a slotted direct-sequence CDMA-ALOHA system in a near-far environment are derived. The network users are assumed to be spatially distributed in a plane and a 1/r4 propagation power loss law is used. An accurate approximation for the probability of successful packet transmission incorporating error-correcting block codes is given employing an improved Gaussian method. Results for effective packet throughput and network capacity are presented for various spreading factors and error-correcting codes
Keywords :
block codes; Gaussian method; direct-sequence CDMA-ALOHA; error-correcting block codes; near-far environment; packet transmission; propagation power loss law; spatially distributed users; spreading factors; steady-state packet throughput characteristics; Block codes; Communications technology; Error correction codes; Multiaccess communication; Multiple access interference; Packet radio networks; Power control; Propagation losses; Spread spectrum communication; Throughput;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1994. Wireless Networks - Catching the Mobile Future., 5th IEEE International Symposium on
Conference_Location :
The Hague
Print_ISBN :
90-5199-193-2
DOI :
10.1109/WNCMF.1994.529414
