Anais De VII International Telecommunications Symposium 2010
DOI: 10.14209/sbrt.2010.42
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Evaluation of the Effects of the Co-Channel Interference on the Bit Error Rate of Cellular Systems for BPSK Modulation

Abstract: This paper presents a measurement system for indoor characterization of UWB channels. The presented method uses a scalar network analyzer (SNA) or a spectrum analyzer (SA) with tracking generator, connected to two antennas: a receiving and a transmitting one. This setup, which obtains only the magnitude data of the frequency response, makes the method less expensive when compared with other setups presented in the literature. From the magnitude data of the frequency response, a processing algorithm obtains the… Show more

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Cited by 14 publications
(15 citation statements)
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“…In this paper, since the relay receives the data from the source and another relay at the same time, we handled the IRI problem as being the same as a co-channel interference problem. Thus, if we consider the AWGN channel, the theoretical BER of the TPSR protocol can be calculated as [26] PIRI=12Qγ+αγ+12Qγαγ=12Q()1+αγ+12Q()1αγ, where γ=S/N is the signal-to-noise ratio (SNR), S is the average power of the received signal, N is the average power of the noise, α=1/S/I is the magnitude of the IRI, and S/I=1/α2 is the average signal-to-interference ratio. Here, the SNR is γ=()Eb1ρ/N0·()B/Rb, N0 is the noise power spectral density in W/Hz, B/Rb…”
Section: System Modelmentioning
confidence: 99%
“…In this paper, since the relay receives the data from the source and another relay at the same time, we handled the IRI problem as being the same as a co-channel interference problem. Thus, if we consider the AWGN channel, the theoretical BER of the TPSR protocol can be calculated as [26] PIRI=12Qγ+αγ+12Qγαγ=12Q()1+αγ+12Q()1αγ, where γ=S/N is the signal-to-noise ratio (SNR), S is the average power of the received signal, N is the average power of the noise, α=1/S/I is the magnitude of the IRI, and S/I=1/α2 is the average signal-to-interference ratio. Here, the SNR is γ=()Eb1ρ/N0·()B/Rb, N0 is the noise power spectral density in W/Hz, B/Rb…”
Section: System Modelmentioning
confidence: 99%
“…Em [10], mostra-se que a SNR instantânea na saída do combinadoŕ e igual a soma das SNRs instantâneas de cada antena. Portanto, para o sinal de interesse, tem-se que γ b0 = Na i=1 γ bi,0 , onde γ bi,0é uma VA que representa a SNR por bit instantânea do sinal de interesse na i-ésima antena e cuja FDPé dada em (9). Portanto a FDP de γ b0 , para o caso de diversidade de antenas, e dada por [10]:…”
Section: B Combinador Maximal Ratiounclassified
“…Por outro lado, alguns trabalhos [6]- [7], que avaliam a PEB, considerando a presença da interferência de co-canal (ICC), têm limitado a sua análise apenasàs modulações de ordem inferior ou fazem uma modelagem da ICC usando a aproximação gaussiana [8]. Embora em uma rede celular possam existir vários interferentes, geralmente um deles predomina sobre os outros [9], de tal modo que a interferência nãoé gaussiana.…”
Section: Introductionunclassified
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“…Uma expressão analítica da probabilidade de erro de bit (PEB) para esquemas de modulação M -QAM em canais AWGN, na presença de K interferentes e considerando mapeamento de bits com codificação de Gray, foi obtida em [5]. Embora em uma rede celular possam existir vários interferentes, geralmente um deles predomina sobre os outros [6]. Portanto, neste trabalho vamos considerar a expressão da PEB acima referida para umúnico interferente dominante K = 1, dada por:…”
Section: Probabilidade De Erro De Bitunclassified