An iterative algorithm for asynchronous coded multiuser detection

Multi User Wireless System using Random Access Block Interleaving with SUI Channel

“…In random access block interleaving, interleavers are employed to distinguish different users. The idea was first shown as a possibility in [3]. Also, [4]and [5] showed how performance enhancement is achieved by using different interleaver for different users in conventional CDMA system.…”

Design of Rate Constrained Multi-User Receivers for Satellite Communications

“…Theoretically speaking, when the turbo-code works close to the channel capacity and without channel estimation mismatches, the previous algorithm provides the adequate power allocation for a SINR requirement (19). However, (19) does not provide for practical coding scheme (for finite block length coding) the relationship between target rate and target SNR.…”

“…The classical successive interference cancellation algorithm works then with T M,K = HP. Usually, one needs to use different interleavers for the users as shown in [18], [19]. Although the algorithm is appealing, expression (21) is not simple to implement as it requires many matrix inversions.…”

“…However, (19) does not provide for practical coding scheme (for finite block length coding) the relationship between target rate and target SNR. This can be however deduced from standard tables connectiong the the target FER (10 −4 ) and the value of the E b /N 0 that permits to reach that FER (Frame Error Rate) as shown in table I.…”

“…For the sake of space limitation, the details of equation (19) are not provided (see in [17], where BPSK input is considered). Hence, for a given coding rate R c , one can easily determine the target SINR γ.…”