Polynomial cancellation coded orthogonal frequency division multiplexing with overlapping symbol periods (Overlap PCC-OFDM) is a modulation technique that is less sensitive to frequency errors and more robust against multipath distortion than OFDM. A cyclic prefix is no longer needed. However, fading is still a problem and will cause bit errors. Error propagation will occur as decision feedback...

In this paper we consider a Multi Carrier Code Division Multiplex (MC–CDM) scheme. At the receiver side the Maximum A Posteriori Symbol–by–Symbol Estimator (MAPSSE) is used for the detection of the CDM signal. Therefore the influence of the spreading factor on the overall Bit Error Rate (BER) is investigated. We concatenate the MAPSSE with the channel decoder which allows for iterative decoding...

In this study, approximate symbol error rate (SER) expressions for M-ary phase shift keying (M-PSK) modulation scheme over independent and identically distributed (i.i.d) slow-flat Rician and Rayleigh fading channels are derived. Simulation results show the superior impact of using the maximum ratio combining (MRC) space diversity technique on the overall performance. In particular, the communi...

In this study, approximate symbol error rate (SER) expressions for M-ary phase shift keying (M-PSK) modulation scheme over independent and identically distributed (i.i.d) slow-flat Rician and Rayleigh fading channels are derived. Simulation results show the superior impact of using the maximum ratio combining (MRC) space diversity technique on the overall performance. In particular, the communi...

The transmission over the memoryless additive white Class-A noise (AWCN) channel is considered. For uncoded transmission, an exact expression for the symbol error rate is derived. For coded transmission, the Chernoff bound on the pairwise error probability is calculated and the performance achieved on the real and the complex AWCN channels is compared. Moreover, a lowcomplexity, suboptimum deco...

The symbol-by-symbol maximum a posteriori (MAP) known also as BCJR algorithm is described. The logarithmic versions of the MAP algorithm, namely, Log-MAP and Max-Log-MAP decoding algorithms along with a new Simplified-Log-MAP algorithm, are presented here. Their bit error rate (BER) performance and computational cornplexity of these algorithms are compared. A new hardware architecture for imple...

DH-PIM modulation as an alternative to other pulse modulation schemes is presented. Its symbol and spectral properties are given. Expressions for slot and packet error rates are presented. Results obtained for the packet error rate are compared with OOK and PIM. It offers the same performance as PIM but considerably better performance compared with OOK.

In this paper we examined the broadband fixed wireless access (BFWA) systems by coherent and non-coherent detection using M-ary PSK with Gray code. A closed form for the exact symbol error rate and bit error rate (BER) of M-ary PSK is presented. We show through analysis the physical limitations of the BFWA channels over different values of M (2,4,8,16,32) and the performance difference between ...

In this paper DH-PIM modulation scheme and its properties are discussed. Expressions for, symbol length, transmission capacity, bandwidth requirements, photocurrent, power spectral density and slot and packet error rates are presented. Results obtained for the packet error rate are compared with OOK and PIM. It offers the same performance as PIM but considerably better performance compared with...

In this paper, we propose the analytical approach for amplify-andforward (AF) relay networks with pilot symbol assisted-channel estimation (PAS-CE) over quasi-static Rayleigh fading channels. Moreover, the accuracy of the channel estimation process is verified based on the number of pilot symbols and the accuracy of the derived average symbol error rate (ASER) expression of M-ary phase shift ke...